American Tactical ATI MilSport HGA 5.56 NATO Pistol Barrel Kit

Sons Of Liberty Gun Works M4-L89-13.7 M4-L89 5.56mm 30+1 13.70" Black QPQ Button Rifled Barrel, Black Hardcoat Anodize Receiver, Ambidextrous

FN America AR-15 16" Barrel 556NATO 1:7 Twist Button Broached, Black - 20100039

Faxon Firearms Carbine-Length Button Rifled Pencil Barrel w/Pinned Gas Block 5.56x45mm 10.50", Black

ATI Milsport 5.56 NATO AR Pistol 7.5" Barrel | M-LOK Handguard | 30-Round Magazine

American Tactical MilSport 556 Nato 18" Barrel ATIG15MS55618ML13

Shark Coast Tactical SCC07435MILGY-P Military 5.56 NATO 30+1 10.50 Black Nitride Threaded Barrel, Aluminum Receiver w/Picatinny Rail, M-LOK Handguard, Polymer SB Tactical SBA3 Brace, Magpul MOE Grip,

Brigand Arms Hoplite Edge M-LOK Low-Profile Handguard 5.50", Black