Advantage Arms Conversion Kit, 19-23G5-MOD-CA, 22 LR, 4.02" Barrel, Fits Glock 19/23 Gen 5, Optics Ready, Black, Fixed Sights, 10 Rounds, 2 Magazines, California Compliant AAC19-23G5-MOD-CA

Rosco Manufacturing K9, Saucepack, Barrel, 556NATO, 12.5", Patrol Length Gas Length, Fits AR-15, Nitride Finish, Black, Includes Bolt Carrier Group, Gas Tube, Non Adjustable Gas Block SP-K9-125-556-BCG-GTS-NGB-001

Ballistic Advantage Performance Series, 556NATO, 13.7" Barrel, Black Finish, Lo Pro Gas Block, Carbine Length Gas System, Fits AR15 BABL556028F

Faxon Firearms Match Series, Gunner Profile Barrel, 338 ARC, 14.5", Pistol Length Gas System, Fits AR-15, Nitride Finish, Black 15B338A8P145NGQ-5R-NP3

Radian Weapons Upper/Handguard Set, Cerakote Finish, Olive Drab Green, Fits AR-15, Includes 14" MLOK Handguard, Radian Raptor-SD Charging Handle R0628

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16G-Y-15C

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 16" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR16G-Y-15

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15C

Battle Arms Development WORKHORSE, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG WH-UR10.5G-Y-15

Battle Arms Development Authority Elite, Complete Upper Receiver, 556NATO, 16" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG BAD-AUTH-UR16G-Y-15C

Ballistic Advantage Modern Series, M4 Profile Barrel, 223 Remington/556NATO, 14.5", Carbine Length Gas System, 1:7 Twist, 1/2X28 Threads, 4150 CrMoV, QPQ Corrosion Resistant Finish, Black BABL556009M

Ballistic Advantage Barrel, 556NATO, 13.7", Black, Gas Block, Mid Length Gas System, AR-15 BABL556H37F

Ballistic Advantage Modern Series, Barrel, 556NATO, 13.7", 1:7, Bead Blasted BABL556033M

FN America Barrel, 14.7", 556NATO, 1:7 Twist, Hammer Forged, Carbine Gas System, M4 Contour, Fits AR-15, Matte Finish, Black 20-100405

Noveske Commando, 11.5" Barrel, 223 Remington/556NATO, 1:7 Twist, Carbine Length Gas System, Stainless, Fits AR-15, Includes Pinned Gas Block and Gas Tube 07000050

Noveske Barrel, 556NATO, 14.5", 1:7 Twist, Mid Length Gas System, Pinned Gas Block and Gas Tube, Stainless 07000054

Ballistic Advantage Modern Series, Barrel, 308 Winchester, 12.5", Bead Blasted BABL308008M

Ballistic Advantage Premium Black Series, Barrel, 8.6 Blackout, 12", Pistol Length Gas System, QPQ Corrosion Resistant Finish, Black BABL86B002PQ

Battle Arms Development Authority Elite, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Sniper Gray, Includes Bad Rack-15 C Ambidextrous Charging Handle and AR15/M16 BCG BAD-AUTH-UR10.5G-Y-15C

Battle Arms Development Authority Elite, Complete Upper Receiver, 556NATO, 10.5" Barrel, Fits AR-15, M-Lok Handguard, Anodized Finish, Black, Includes Bad Rack-15 Ambidextrous Charging Handle and AR15/M16 BCG BAD-AUTH-UR10.5B-Y-15

Geissele Automatics Super Duty MOD1, Complete Upper Receiver, 556NATO, 10.3" Cold Hammer Forged Barrel, 1:7 Twist, HuxWrx Flash Hider-QD Muzzle Device, M-LOK Free Float Handguard, Geissele Airborne Charging Handle, Nanowepon Reliability Enhanced Bolt Carrier Group, Fits AR-15, Anodized Finish, Black 08-543B