Upper Receivers

SKU: CMMG22BA651 Instantly transform your 5.56/.223 caliber rifle into a versatile .22LR firearm with this easy drop-in conversion kit. Simply replace your existing bolt carrier group, and you're ready to enjoy the benefits of shooting .22LR...

Product SKU: CMMG22BA64E Transform your 5.56/.223 rifle into a .22LR platform with this seamless drop-in conversion kit. Simply replace your existing bolt carrier group and experience the versatility of .22LR ammunition. This kit comes complete with...

Unlock the versatility of your 5.56/.223 rifle with this drop-in .22LR conversion kit. Simply replace your existing bolt carrier group, and you're ready to enjoy the cost savings and reduced recoil of shooting .22LR ammunition. This kit is designed...

SKU: CMMG60B1091-AB Unlock superior long-range performance with the CMMG RESOLUTE upper receiver group. Expertly engineered to chamber Hornady's innovative 6mm ARC (Advanced Rifle Cartridge), this complete upper assembly allows you to seamlessly...

SKU: APAR501603AC Experience superior performance with this meticulously crafted receiver. It's not just about aesthetics; it's about the feel, function, handling, and overall performance. This receiver is precision-engineered to exceed expectations...

SKU: APAR700222AC 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 their M4E1 Enhanced Upper...

SKU: APAR308631AC Build your dream .308 AR platform with this high-quality M5 .308 Assembled Upper Receiver. Forged from durable 7075-T6 aluminum, this upper receiver is precision machined to ensure compatibility with standard .308 components. The...

M5 .308 Assembled Upper Receiver - The Foundation for Your Big Bore Build SKU: APAR308515AC Start your dream .308 build with this high-quality M5 .308 Assembled Upper Receiver. Forged from durable 7075-T6 aluminum, this upper receiver is precision...

SKU: APAR700220AC 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 their M4E1 Enhanced Upper...

SKU: APAR308505AC The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the...

SKU: APAR700202AC 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...

SKU: APAR308503AC The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the...