Maxim Defense Industries MD15-1505 Upper Receiver .300 AAC Blackout 14.5in 5.5in Medium Barrel Pistol 1-5 Twist 5/8x24 Thread M-Slot Handguard

Daniel Defense Ddm4 300s 10.3" 300 Aac Blackout Upper Receiver Black - Ddm4 300 S 10.3" 300 Aac Bla

The Daniel Defense DDM4 300S was designed for operators demanding a short-barrel rifle chambered in the popular 300 Blackout cartridge. Using standard 5.56mm magazines and bolts, the 300S is able to deliver .30 caliber ammunition with greater muzzle... ... more

Maxim Defense Industries MD15-1505 Upper Receiver 7.62x39mm 14.5in 5.5in Medium Barrel Pistol 1-10 Twist 5/8x24 Thread M-Slot Handguard Hatebrake Type

Maxim Defense Industries MD15-1505 Upper Receiver 7.62x39mm 14.5in 5.5in Medium Barrel Pistol 1-10 Twist 5/8x24 Thread M-Slot Handguard Hatebrake Type. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any... ... more

Maxim Defense Industries MD15-1505 Upper Receiver 5.56 Nato 14.5in 5.5in Medium Barrel Pistol 1-7 Twist 1/2x28 Thread M-Slot Handguard Hatebrake Type

Maxim Defense Industries MD15-1505 Upper Receiver 5.56 Nato 14.5in 5.5in Medium Barrel Pistol 1-7 Twist 1/2x28 Thread M-Slot Handguard Hatebrake Type. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Arid Earth MXM-47812

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Arid Earth MXM-47812. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 300 BLK NATO Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47837

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 300 BLK NATO Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47837. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Arid Earth MXM-47834

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Arid Earth MXM-47834. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47813

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47813. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW compatible... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47811

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47811. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW compatible... ... more

Maxim Defense Industries MD15-1505 Upper Receiver 5.56 Nato 14.5in 5.5in Medium Barrel Pistol 1-7 Twist 1/2x28 Thread M-Slot Handguard Hatebrake Type

Maxim Defense Industries MD15-1505 Upper Receiver 5.56 Nato 14.5in 5.5in Medium Barrel Pistol 1-7 Twist 1/2x28 Thread M-Slot Handguard Hatebrake Type. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 300 BLK NATO Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47836

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 300 BLK NATO Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47836. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47826

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47826. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47810

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47810. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47835

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black MXM-47835. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower... ... more

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47827

Maxim Defense Industries PDX U.R.G. Mil-Spec Upper Receiver 300 BLK Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47827. R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers or a PDX/SCW compatible... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47832

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Arid Earth MXM-47832. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in Octagon M-LOK Hand Guard Dimpled Flash Can

Grid Defense Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in Octagon M-LOK Hand Guard Dimpled Flash Can. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tactical. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Blue. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tungsten

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Tungsten. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Burnt

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Burnt. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider. 300 Blackout Upper Receiver is an excellent addition to any high-quality AR build. Each of these Grid... ... more

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47833

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 7.62x39 Hate Brake 5/8-24 Thread 5.5in Barrel Black MXM-47833. R.G is built to handle the fierce demands of the Tier 1 community and designed to install on any Mil-Spec lower... ... more

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit 300 BLK 14in Hate Brake 5/8-24 Thread 5.5in Barrel Type III Hardcoat Anodized Black

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit 300 BLK 14in Hate Brake 5/8-24 Thread 5.5in Barrel Type III Hardcoat Anodized Black. 75 inches with the stock collapsed. These AR15 Upper Receivers are a cut above what you get anywhere else.... ... more

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit 300 BLK 14in Hate Brake 5/8-24 Thread 5.5in Barrel Type III Hardcoat Anodized Arid Earth

Maxim Defense Industries MDX 505 PDX SCW PDW Brace Upper Kit 300 BLK 14in Hate Brake 5/8-24 Thread 5.5in Barrel Type III Hardcoat Anodized Arid Earth. 75 inches with the stock collapsed. These AR15 Upper Receivers are a cut above what you get anywhere... ... more

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver .300 Blackout 7.5in Barrel M4 Pistol Profile 1-8 Twist 5/8x24 Thread M-Lok FirestormType

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver .300 Blackout 7.5in Barrel M4 Pistol Profile 1-8 Twist 5/8x24 Thread M-Lok FirestormType. 5in .300 Blackout Complete Upper Receiver. These AR15 Upper Receivers through the expert product... ... more