MSR Uppers

Aim Sports AR5CUB9 Complete Build Kit 5.56x45mm NATO 10.50" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver 10" M-LOK Handguard for AR-15

ATI ATI15AX410KIT18 Alpha Upper Kit 410GA 18.50" 5rd Black

ATI ATI15MS450BM Mil-Sport Upper Complete 450 Bushmaster 16" Black Nitride Barrel/7075-T6 Aluminum Black Anodized Receiver 15" M-LOK Handguard for AR-15

Battle Arms Development, WORKHORSE, Upper Receiver Assembly, 223 Remington/556NATO, 16" Barrel, Mid-length Gas System, Anodized Finish, Black, A2 Flash Hider, WORKHORSE 15" M-LOK Free Float Handguard, Does Not Include Bolt Carrier Group or Charging Handle

Black Rain Ordnance BROCARNIVORE450B Carnivore 450 Bushmaster 16" for AR-15

Broadsword Billet Upper Receiver

CMMG 28B260CAB Resolute 22 ARC 16.10" 7075-T6 Aluminum 15" M-LOK Handguard

CMMG 28B260CTI Resolute 22 ARC 16.10" 7075-T6 Aluminum 15" M-LOK Handguard

CMMG 28B3D0CCG Endeavor 22 ARC 20"

CMMG 28B3D0CCT Endeavor 22 ARC 20"

CMMG 28B3D0CSG Endeavor 22 ARC 20"

CMMG 28B3D0CTI Endeavor 22 ARC 20"