Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 10.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta FDE STAG15101722

Stag 15 5.56 7.5in Tactical Nitride Upper Receivers - Stag 15 Tactical 7.5" Nitride Upper

Sure, the 5.56 NATO cartridge tends to run better in longer barrels, but there's still plenty of energy from a round fired out of an ultra-compact barrel, and let's be real: there's some serious allure to an ultra-compact AR-style pistol, isn't there?... ... more

Stag 15 5.56 16in Tactical Nitride Upper Receivers - Stag 15 Tactical Nitride Upper

Looking to take your AR-15 to the next level? Maybe you have a dedicated upper receiver designed for a particular task, and you're looking to open up your rifle's capabilities? This Stag Arms Stag-15 Tactical Upper Receiver is an easy swap for your... ... more

Stag 15 5.56 M4 Upper Receivers - Stag 15l Left Hand M4 Phosphate Upper

No matter how many options emerge in the massive AR-15 market, there's always going to be a demand for that classic, M4-style configuration that's been proven on battlefields across the world. Now, you can have an AR-15 that's built to the same... ... more

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Chromephos FDE

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Chromephos FDE. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Stag Arms AR-15 Retro Right Hand Upper Receiver 5.56 NATO 20in Barrel NJ Compliant GOV Profile 1-7 Twist 1/2 x 28 Thread Compensator Black

Stag Arms AR-15 Retro Right Hand Upper Receiver 5.56 NATO 20in Barrel NJ Compliant GOV Profile 1-7 Twist 1/2 x 28 Thread Compensator Black. Made to mil-spec standards with a removable A3 carry handle and a rifle length thermoplastic handguard with... ... more

AIM Sports Inc Complete AR Pistol Upper Receiver w/ BCG 5.56 NATO 10.5in Barrel M4 Profile Carbine 1-8 Twist 1/2x28 Thread 10M-LOK Free Float

AIM Sports Inc Complete AR Pistol Upper Receiver w/ BCG 5.56 NATO 10.5in Barrel M4 Profile Carbine 1-8 Twist 1/2x28 Thread 10M-LOK Free Float. . Developed by using several of the most extremely heavy duty and dependable resources in existence these... ... more

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black

Stag Arms AR-15 Upper Left Hand Receiver 5.56 NATO 16in Barrel Maryland Compliant HBAR Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver you... ... more

Stag Arms AR-15 Tactical Upper Receiver .300 AAC Blackout 8in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta FDE STAG15113102

Stag Arms AR-15 Tactical Upper Receiver .300 AAC Blackout 8in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta FDE STAG15113102. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more

Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon

Aero Precision M4E1 Enhanced Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 12 in M-LOK Handguard Pinned VG6 Epsilon. Key features include the addition of quick disconnect sling sockets enhanced milling design for grip... ... more

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 10.5in Stainless Steel Length Carbine 1-8 Twist w/ 10in MLOK Anodized Black Medium AA-C10S556C7K10

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 10.5in Stainless Steel Length Carbine 1-8 Twist w/ 10in MLOK Anodized Black Medium AA-C10S556C7K10. 5.56 NATO. 10.5" Stainless Steel Barrel. Carbine Gas System. 10" M-Lok Handguard. Charging Handle and... ... more

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 16in Barrel Hanson Profile 1-7 Twist 1/2x28 Left Hand VG6 Gamma Black STAG15110144

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 16in Barrel Hanson Profile 1-7 Twist 1/2x28 Left Hand VG6 Gamma Black STAG15110144. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more

Troy Upper Receiver Assembly AR-15 A3 223 Wylde 11.5in Barrel Ultra-Low Profile 10.5in SOCC Handguard Black SUPG-A3S-11BT-01

Troy Upper Receiver Assembly AR-15 A3 223 Wylde 11.5in Barrel Ultra-Low Profile 10.5in SOCC Handguard Black SUPG-A3S-11BT-01. Developed specifically for todays war fighter and Law Enforcement led by Special Operations field requirements. The M-Lok... ... more

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 1/2x28 Thread 12 in ATLAS R-ONE M-LOK

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 1/2x28 Thread 12 in ATLAS R-ONE M-LOK. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver... ... more

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS R-ONE Handguard Anodized

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS R-ONE Handguard Anodized. By combining our lightest handguards and barrel profiles with the No Forward Assist Upper Receiver... ... more

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 1/2x28 Thread 12 in ATLAS S-ONE M-LOK

Aero Precision M4E1 Threaded Complete Upper Receiver 5.56 NATO 14.5 in Barrel Government Profile 1-7 Twist 1/2x28 Thread 12 in ATLAS S-ONE M-LOK. Our proprietary ATLAS attachment system is a durable and dependable mounting platform maintaining a slim... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel M4 Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101111. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... more

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Black STAG15100142

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Black STAG15100142. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Maryland Compliant Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride

Stag Arms AR-15 Tactical Right Hand Upper Receiver 5.56 NATO 16in Barrel Maryland Compliant Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights... ... more

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 10.5in Barrel Length Carbine 1-8 Twist w/ 10in MLOK Anodized Black Medium AA-C10556C7K10

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 10.5in Barrel Length Carbine 1-8 Twist w/ 10in MLOK Anodized Black Medium AA-C10556C7K10. The complete upper assemblies come with our military spec Carbine gas system. The complete assemblies come with... ... more

Stag Arms AR-15 3-Gun Elite Left HandUpper Receiver 5.56 NATO 18in Barrel Heavy-Fluted Profile 1-8 Twist VG6 Gamma Black STAG15110611

Stag Arms AR-15 3-Gun Elite Left HandUpper Receiver 5.56 NATO 18in Barrel Heavy-Fluted Profile 1-8 Twist VG6 Gamma Black STAG15110611. Specifications for Stag Arms AR-15 3-Gun Elite Right HandUpper Receiver: Manufacturer: Stag Arms Color: Black Finish:... ... more

Stag Arms AR-15 Tactical Left Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride Black STAG15110142

Stag Arms AR-15 Tactical Left Hand Upper Receiver 5.56 NATO 16in Barrel Hanson Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Nitride Black STAG15110142. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights... ... more

Stag Arms AR-15 Retro Right Hand Upper Receiver 5.56 NATO 20in Barrel GOV Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101011

Stag Arms AR-15 Retro Right Hand Upper Receiver 5.56 NATO 20in Barrel GOV Profile 1-7 Twist 1/2 x 28 Thread A2 Birdcage Flash Hider Black STAG15101011. Made to mil-spec standards with a removable A3 carry handle and a rifle length thermoplastic... ... more

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113

Stag Arms AR-15 Upper Right Hand Receiver 5.56 NATO 16in Barrel NJ Compliant M4 Profile 1-7 Twist 1/2 x 28 Thread Compensator Black STAG15101113. Made to mil-spec standards this upper satisfies the need for a standard GI carbine. Featuring a 5.56x45mm... ... 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

XTS Complete Upper Receiver w/o BCG w/ Ce Rail AR-15 .223/5.56 19.5in 10.5in Barrel Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride

XTS Complete Upper Receiver w/o BCG w/ Ce Rail AR-15 .223/5.56 19.5in 10.5in Barrel Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With an... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With an... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With an... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish Blue

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish Blue. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish OD

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish OD. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With an... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With an... ... more

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish Red

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish Red. 56 upper comes FULLY ASSEMBLED with a 5.56 NATO barrel capable of shooting both .223 and 5.56. With... ... more

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta Nitride FDE STAG15111922

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 7.5in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta Nitride FDE STAG15111922. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics... ... more

Stag Arms 15 Tactical Elite 5.56mm Upper Receiver 16in Left 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 Left 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

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 10.5in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta Black STAG15110422

Stag Arms AR-15 Tactical Upper Receiver 5.56x45mm NATO 10.5in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta Black STAG15110422. The handguard provides an uninterrupted picatinny rail along the top which allows room for sights optics and... ... more