MSR Uppers And Lowers

Aim Sports AR5CUB8 Assembly 5.56x45mm NATO 10.50" Black Nitride Barrel 7075-T6 Aluminum Black Anodized Receiver 10" M-LOK Handguard for AR-15

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

Aim Sports ARCLPK Lower Parts Kit AR-15 Black

American Defense Mfg., UIC BILLET, Semi-automatic, Stripped Lower Receiver, 223 Remington/556NATO, Anodized Finish, Black, Includes Installed Ambidextrous Magazine Release and Bolt Catch

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

Bravo Company, Complete Lower Receiver, AR-15, Multi Caliber, Anodized Finish, Black, BCM SOPMOD 2 Widebody Stock, 7075 T6 Aluminum, Factory Cosmetic Blem

Bravo Company, Complete Lower Receiver, AR-15, Multi Caliber, Anodized Finish, Flat Dark Earth, BCM SOPMOD 2 Widebody Stock, 7075 T6 Aluminum, Factory Cosmetic

Bravo Company, BCM, Semi-automatic, Complete Lower Receiver, 223 Remington, Black, BCM SOPMOD

Bravo Company, Bravo Company, Semi-automatic Complete Lower Receiver, AR, 223 Remington/556NATO, Anodized Finish, Black, Flat Dark Earth BCM Gunfighter Stock, Fire Controls Marked SAFE and SEMI, BCMGUNFIGHTER Enhanced Trigger Guard, BCMGUNFIGHTER QD End Plate, Flat Dark Earth BCMGUNFIGHTER Pistol Grip

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