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| Best Seller  | Aero Precision Ar-15 M4e1 Enhanced Upper Receiver - M4e1 Enhanced 5.56mm Assembled Upper Receiver Fo Aero Precision's M4E1 Enhanced Upper Receiver is a new take on the way the handguard attaches to the upper receiver on AR-15/M16 platforms. The upper receiver is made from forged 7075 T6 aluminum with the handguard mounting platform forged as an... ... more
Aero Precision Ar-15 M4e1 Enhanced Upper Receiver - M4e1 Enhanced 5.56mm Assembled Upper Receiver Fo Aero Precision's M4E1 Enhanced Upper Receiver is a new take on the way the handguard attaches to the upper receiver on AR-15/M16 platforms. The upper receiver is made from forged 7075 T6 aluminum with the handguard mounting platform forged as an... | go to store |
 | Aero Precision 308 Ar M5 Upper Receiver - M5 (.308) Assembled Upper Receiver Threaded Black Forged from 7075-T6 aluminum, the Aero Precision M5 308 Upper Receiver is a great platform for a big-bore AR build. Precision machined to Aero Precision's specifications, the upper features M4 feedramps and a matte black hard coat anodized Mil 8625... ... more
Aero Precision 308 Ar M5 Upper Receiver - M5 (.308) Assembled Upper Receiver Threaded Black Forged from 7075-T6 aluminum, the Aero Precision M5 308 Upper Receiver is a great platform for a big-bore AR build. Precision machined to Aero Precision's specifications, the upper features M4 feedramps and a matte black hard coat anodized Mil 8625... | go to store |
| Best Seller  | Grid Defense Complete Upper Receiver 7.62x39 16 inch Carbine Length 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash. 62x39mm upper receivers and build kits. We look forward to providing the tactical industry with top... ... more | FREE shipping go to store |
 | Grid Defense Complete Upper Receiver 7.62x39 16 inch Carbine Length 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash. 62x39mm upper receivers and build kits. We look forward to providing the tactical industry with top... ... more | FREE shipping go to store |
 | Grid Defense Complete Upper Receiver 7.62x39 16 inch Carbine Length 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash. 62x39mm upper receivers and build kits. We look forward to providing the tactical industry with top... ... more | FREE shipping go to store |
 | Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov $55 off $500+. Use code SEPT55The M4E1 5.56mm 18" Rifle Upper Receiver adds two important benefits to Aero Precision's M4E1 carbine upper. First, the longer 18" barrel imparts extra velocity to the bullet with a very small addition to the rifle's OAL. Second, the longer... ... more
Aero Precision M4e1 Assembled Upper Receiver 18" 5.56 Rifle Length - M4e1 5.56mm Assem Uppr Rcvr Gov The M4E1 5.56mm 18" Rifle Upper Receiver adds two important benefits to Aero Precision's M4E1 carbine upper. First, the longer 18" barrel imparts extra velocity to the bullet with a very small addition to the rifle's OAL. Second, the longer... | go to store |
 | Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 14. $55 off $500+. Use code SEPT55Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... ... more
Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 14. Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... | go to store |
 | Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 16" $55 off $500+. Use code SEPT55Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... ... more
Aero Precision M4e1 Assembled Upper Receiver 5.56 Mid-Length - M4e1 5.56 Nato Assem Uppr Rcvr M4 16" Aero Precision's M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than... | go to store |
 | Aero Precision 5.56x45 Nato Assembled Upper Receiver For Ar-15 - 5.56x45 Nato Assembled Upper Receiv $20 off $200+. Use code SEPT20Aero Precision's AR-15 5.56mm 16" Carbine Upper Receiver closely resembles the military's M4 flattop upper and comes fully assembled. The charging handle and bolt/carrier group are omitted, since AR-15 fans who assemble their own rifles usually... ... more
Aero Precision 5.56x45 Nato Assembled Upper Receiver For Ar-15 - 5.56x45 Nato Assembled Upper Receiv Aero Precision's AR-15 5.56mm 16" Carbine Upper Receiver closely resembles the military's M4 flattop upper and comes fully assembled. The charging handle and bolt/carrier group are omitted, since AR-15 fans who assemble their own rifles usually... | go to store |
 | Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Gen-2 Handguard & Fsb - M4e1 5.56 Assm Uppr Rc $55 off $500+. Use code SEPT55Aero Precision's M4E1 5.56mm 10.5" Carbine Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two most popular components for customization. At its heart is Aero's forged M4E1 receiver that combines the... ... more
Aero Precision M4e1 5.56mm Assembled Upper Receiver W/Gen-2 Handguard & Fsb - M4e1 5.56 Assm Uppr Rc Aero Precision's M4E1 5.56mm 10.5" Carbine Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two most popular components for customization. At its heart is Aero's forged M4E1 receiver that combines the... | go to store |
 | Aero Precision M4e1 5.56 Assembled Upper Receiver Carbine W/G2 Handguard - M4e1 5.56 Nato Assem Uppr $55 off $500+. Use code SEPT55Aero Precision's M4E1 5.56mm 16" Carbine Upper Receiver comes fully assembled, minus only the bolt/carrier group and charging handle - the two components any AR-15 fan with even a little urge to customize wants to replace anyway. Aero's M4E1... ... more
Aero Precision M4e1 5.56 Assembled Upper Receiver Carbine W/G2 Handguard - M4e1 5.56 Nato Assem Uppr Aero Precision's M4E1 5.56mm 16" Carbine Upper Receiver comes fully assembled, minus only the bolt/carrier group and charging handle - the two components any AR-15 fan with even a little urge to customize wants to replace anyway. Aero's M4E1... | go to store |
 | Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver... ... more
Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver... | go to store |
 | Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver... ... more
Aero Precision Ar-15 Upper Receiver Assembled No Auto Sear Cut - 5.56mm Assembled Upper Rcvr No Auto If you're looking to take advantage of the huge market for AR-15 components and accessories but aren't legally allowed to possess components that function with an installed auto sear in the AR-15 lower, then the Aero Precision AR-15 Upper Receiver... | go to store |
 | Grid Defense Complete Upper Receiver 7.62x39 16 inch Carbine Length 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash. 62x39mm upper receivers and build kits. We look forward to providing the tactical industry with top... ... more | FREE shipping go to store |
 | Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the... ... more | FREE shipping go to store |
 | Lightweight Kit Minus Lower Receiver w/ Col. Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized Man.. 56 Lightweight Minus Lower Receiver Kit you can build out an entirely new AR except for the stripped... ... more | FREE shipping go to store |
 | TacFire Complete Upper Receiver AR-15 Lower Parts Kit 5.56mm 7.5in Barrel Pistol Length 7in M-LOK Handguard Anodized Black PK556-LPK. Everything you need to build out your 5.56 pistol just add a lower receiver. Includes : 7.5" Barrel Low profile gas... ... more | FREE shipping go to store |
 | Many of today's AR-15 upper receivers include a forward assist already installed, so if you've received a completely stripped upper for your build, you might be frustrated by the lack of these parts. Worry no longer! CMMG has AR builders covered... ... more
Many of today's AR-15 upper receivers include a forward assist already installed, so if you've received a completely stripped upper for your build, you might be frustrated by the lack of these parts. Worry no longer! CMMG has AR builders covered... | go to store |
 | Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm $20 off $200+. Use code SEPT20The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be... ... more
Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be... | go to store |
 | Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm $20 off $200+. Use code SEPT20The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be... ... more
Sons Of Liberty Gun Works Ar-15 East India Upper Receiver Starter Kits W/ Combat Grade Bbls - 5.56mm The Sons of Liberty East India Starter Kit is designed to provide a solid foundation for any build. The SOLGW 7075-T6 Upper, 4140 Steel Gas Block, Melonited gas tube and Combat Grade Barrel. Shipped assembled with a GI barrel nut, the kit can be... | go to store |
 | Alexander Arms AR15 Stripped Rifle Upper .50 Beowulf 16 in Barrel Carbine Length 1-20 Twist 49/64x20 Thread Thread Protector Black KIT-50. The Upper Receiver Built Kit comes with all the key components making it an excellent choice for a home build.... ... more | FREE shipping go to store |
 | Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp $55 off $500+. Use code SEPT55This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... ... more
Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... | go to store |
 | Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp $20 off $200+. Use code SEPT20This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... ... more
Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... | go to store |
 | Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp $55 off $500+. Use code SEPT55This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... ... more
Aero Precision M4e1 5.56 Assembled Upper Receiver W/M-Lok Atlas S-One Handguard - M4e1 5.56 Assm Upp This complete upper includes Aero Precision's new ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Aero Precision's proprietary ATLAS attachment... | go to store |
 | Aero Precision M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembled Upper Govt 18" Bb $55 off $500+. Use code SEPT55This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... ... more
Aero Precision M4e1 Upper Receivers Complete Threaded 5.56mm - M4e1 5.56 Assembled Upper Govt 18" Bb This complete upper includes Aero Precision's new ATLAS R-ONE Handguard! The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Their... | go to store |
 | Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded... ... more
Aero Precision M4e1 Assembled Upper Receiver Threaded 5.56mm Fde - M4e1 5.56 Nato Assembled Upper Rc The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded... | go to store |
 | Aero Precision Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assi The AR15 Assembled Upper Receiver comes with the port door already installed. This specific model does not have forward assist provisions. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and... ... more
Aero Precision Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assi The AR15 Assembled Upper Receiver comes with the port door already installed. This specific model does not have forward assist provisions. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and... | go to store |
 | Aero Ar-15 Assembled Upper 5.56mm Build Kits - Build Kit 5.56mm Assembled Upper 16" Carbine 12" Hg B $20 off $200+. Use code SEPT20Why buy a complete rifle, only to discard half (or more) of its parts as you customize it? Money down the drain! Our Aero Precision AR-15 Upper Bundles contain the three core components: receiver, barrel, and an extended M-LOK handguard. You... ... more
Aero Ar-15 Assembled Upper 5.56mm Build Kits - Build Kit 5.56mm Assembled Upper 16" Carbine 12" Hg B Why buy a complete rifle, only to discard half (or more) of its parts as you customize it? Money down the drain! Our Aero Precision AR-15 Upper Bundles contain the three core components: receiver, barrel, and an extended M-LOK handguard. You... | go to store |
 | Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Ar-15 5.56 Super Duty Rifle Build Kit $130 off $1000+. Use code SEPT130The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house... ... more
Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Ar-15 5.56 Super Duty Rifle Build Kit The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house... | go to store |
 | Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard... ... more
Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard... | go to store |
 | Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard... ... more
Aero Precision Ar-15 M4e1 Assembled Upper No Forward Assist - M4e1 5.56mm Assembled Upper Receiver N This upper receiver features the same tried-and-true construction and aesthetics as Aero's M4E1 Enhanced Upper Receivers, without provisions for a forward assist. The M4E1 Enhanced Upper Receiver is a one-piece design combining the handguard... | go to store |
 | Tiger Rock AR-15 Barrel Rifle Modular Kit .223 Wylde 24in 18in Barrel M4 A2/Government Mid 1x7 Twist 1/2x28 Thread 15in M-Lok Handguard Brake. This is a great kit for those looking to build their own AR. All the parts included in the basic upper... ... more | FREE shipping go to store |
 | Tiger Rock AR-15 Barrel BCG LPK and Rogers Stock 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 15in M-Lok Handguard Brake Nitride Anodized. This combo kit includes everything you need to complete your upper receiver build and is sure to... ... more | FREE shipping go to store |
 | Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride. Lower receiver is not included. Specifications for Tiger Rock 5.56mm AR-15 Rifle Build Kit:... ... more | FREE shipping go to store |
 | Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Brownells Geissele 5.56 Super Duty Rif $130 off $1000+. Use code SEPT130The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house... ... more
Geissele Automatics Ar-15 Super Duty Rifle Build Kit 5.56mm - Brownells Geissele 5.56 Super Duty Rif The Geissele Super Duty Build kit features the quality and workmanship you've come to expect from the Geissele name. The complete upper, chambered in 5.56mm, features a Nanoweapon-coated Surefire Closed-Tine Flash Hider mounted to an in-house... | go to store |
 | CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Charcoal Green 55BC7C3-CG CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Charcoal Green 55BC7C3-CG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go... ... more | FREE shipping go to store |
 | CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Coyote Tan 55BC7C3-CT CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Coyote Tan 55BC7C3-CT. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... ... more | FREE shipping go to store |
 | CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Midnight Bronze 55BC7C3-MB CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Midnight Bronze 55BC7C3-MB. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go... ... more | FREE shipping go to store |
 | CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Sniper Grey 55BC7C3-SG CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Sniper Grey 55BC7C3-SG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... ... more | FREE shipping go to store |
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