Grid Defense Complete Upper Receiver 5.56mm 16 inch Carbine Length 4150 M4 Barrel 1-7 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark Earth

Grid Defense Complete Upper Receiver 5.56mm 16 inch Carbine Length 4150 M4 Barrel 1-7 Twist 14 inch M-LOK Rail A2 Flash Hider OD Green GD16E14GFR556OD

Grid Defense Complete Upper Receiver 5.56mm 16 inch Carbine Length 4150 M4 Barrel 1-7 Twist 14 inch M-LOK Rail A2 Flash Hider OD Green GD16E14GFR556OD. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6... ... more

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can OD Green

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can OD Green. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum for... ... more

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Black

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Black. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum for a... ... more

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Tactical Grape

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Tactical Grape. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6... ... more

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Burnt Bronze GD105E9GFR556BB

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Burnt Bronze GD105E9GFR556BB. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum for a... ... more

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Tungsten Gray

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Tungsten Gray. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum... ... more

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Burnt Bronze

Grid Defense Complete Upper Receiver 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch Octagon M-LOK Rail Dimpled Flash Can Burnt Bronze. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum... ... more

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Tactical Grape GD105E9GFR556GRP

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Tactical Grape GD105E9GFR556GRP. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Blue Titanium GD105E9GFR556BT

Grid Defense Complete Upper Receiver 5.56mm 10.5 inch Carbine Length 4150 Steel M4 Barrel 1-7 Twist A2 Flash Hider Blue Titanium GD105E9GFR556BT. 56 Upper Receiver. Grid Defense constructed these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum for... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol Length 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol Length 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol Length 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol Length 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash Can. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch M-LOK Free Float Hand

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 9 inch M-LOK Free Float Hand. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Geissele Super Duty Stripped Upper Receiver 5.56mm 16.5in Barrel Carbine Length 1-7 Twist Sand 16in 08-247S

Geissele Super Duty Stripped Upper Receiver 5.56mm 16.5in Barrel Carbine Length 1-7 Twist Sand 16in 08-247S. At the heart of this stripped upper is a Super Duty upper receiver that mates to a 15" MK16 Super Modular rail via a center aligning tab... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 105in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote APAR700712M2

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 105in M4 Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard FDE Cerakote APAR700712M2. The R-ONE handguards are designed with size and weight in mind while still providing plenty of... ... more

LWRCI Complete Upper Receiver IC 5.56mm 16 inch Barrel 1-7 Twist Extended M-LOK Handguard Black ICEU5B16

LWRCI Complete Upper Receiver IC 5.56mm 16 inch Barrel 1-7 Twist Extended M-LOK Handguard Black ICEU5B16. Built on our patented self-regulating short-stroke gas piston system machined from materials that belong to the superalloy family of steel alloys... ... more

LWRCI Complete Di Upper Receiver 5.56mm 16 inch Barrel 1-7 Twist M-LOK Handguard Black 16in ICDIU5B16ML

LWRCI Complete Di Upper Receiver 5.56mm 16 inch Barrel 1-7 Twist M-LOK Handguard Black 16in ICDIU5B16ML. The IC DI MLOK Upper is a true step up from standard Direct Impingement model. IC DI MLOK Upper Receiver ships complete with LWRCI Bolt Carrier... ... more

Daniel Defense Complete Upper Receiver w/ Flash Hider DDM4-V7-LW 5.56mm NATO 16 in Barrel Low Profile Mid 1-7 Twist Free-Floating MFR XS M-LOK Rail 15

Daniel Defense Complete Upper Receiver w/ Flash Hider DDM4-V7-LW 5.56mm NATO 16 in Barrel Low Profile Mid 1-7 Twist Free-Floating MFR XS M-LOK Rail 15. It features a mid-length gas system for smooth reliable cycling and reduced wear on moving parts. A... ... more

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard Black Anodized

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard Black Anodized. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate... ... more

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in Mid-Length Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 16in Mid-Length Barrel 1-7 Twist A2 Flash Hider ATLAS R-ONE Handguard Black Anodized. Specifications for Aero Precision M4E1 16in 5.56 ATLAS R-ONE M-LOK Complete Upper Receiver with Flash... ... more

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Birdcage. 56 Complete Upper Receiver w/Pistol Lower Parts Kit has everything you need to complete your new... ... more

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision

Aero Precision M4E1 Threaded 5.56mm Complete Upper Receiver 145in Mid-Length Barrel 1-7 Twist 1/2x28 Thread ATLAS R-ONE Handguard w/VG6 Precision. The R-ONE handguards are designed with size and weight in mind while still providing plenty of... ... more

Stag Arms 15 Tactical Elite 5.56mm Upper Receiver 16in Right Hand Hanson Barrel Profile Mid-Length 1-7 Twist 1/2-28 Thread VG6 Gamma SL FDE

Stag Arms 15 Tactical Elite 5.56mm Upper Receiver 16in Right Hand Hanson Barrel Profile Mid-Length 1-7 Twist 1/2-28 Thread VG6 Gamma SL FDE. 56mm Upper Receiver. Formulated using some of the most strong and long lasting components around these AR15... ... more

Sons of Liberty Gun Works Half Complete Upper Receiver M4-EXO3 5.56mm 16in 13in Combat Barrel EXO3 Rail A2 Flash Hider No BCG or CH Black

Sons of Liberty Gun Works Half Complete Upper Receiver M4-EXO3 5.56mm 16in 13in Combat Barrel EXO3 Rail A2 Flash Hider No BCG or CH Black. 56 Half Complete Upper Receiver then you have found yourself in the absolute right location.. Formulated using... ... more

Guntec USA 16'' 5.56mm 1-7 Twist M4 4150 Barrel High Polished Gold Titanium Nitride BAR-16-TIN-HP

Guntec USA 16'' 5.56mm 1-7 Twist M4 4150 Barrel High Polished Gold Titanium Nitride BAR-16-TIN-HP. 56mm M4 4150 Barrel was made in order to function as the best item for anyone needing a high quality choice.. These AR15 Barrels through the skilled... ... more

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage. 56 Upper Receiver. Ghost Firearms machined these Mil-Spec AR15 Upper Receivers from 7075 T6 aluminum... ... more

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Birdcage. 56 Complete Upper Receiver w/Pistol Lower Parts Kit has everything you need to complete your new lower... ... more

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Chrome Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Chrome Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2. 56 Complete Upper Receiver w/Pistol Lower Parts Kit is the perfect item for those looking to create a... ... more

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

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 AR... ... more

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

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 AR... ... more

Tiger Rock AR-15 Complete Upper Receiver 5.56mm 24in 16in Barrel M4 Carbine 1x8 Twist 1/2x28 Thread Quad Rail 15in M-Lok Handguard Brake Nitride

Tiger Rock AR-15 Complete Upper Receiver 5.56mm 24in 16in Barrel M4 Carbine 1x8 Twist 1/2x28 Thread Quad Rail 15in M-Lok Handguard Brake Nitride. Each part conforms to Mil-Spec dimensions and is made from quality materials to ensure accuracy and... ... more