Sons of Liberty Gun Works M4-L89 .300 BLK 8.5" Bbl L89 Rail A2FH Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-300-85-A2

Sons of Liberty Gun Works SOLGW 14.50" Upper 5.56x45mm M-LOK Rail - Tactical Excellence - M4L89BSCHF14.5

Sons of Liberty Gun Works L89 Combat V2 AR-15 13.7" Pinned CMV 5.56 NATO Assembled Upper Receiver w/ NOX-9 Flash Hider

AERO PRECISION M5 20" .308 CMV Complete Upper Receiver w/ ATLAS S-ONE M-Lok 15" Handguard

Griffin Armament GAET3FDEAM-W Explorr 300 Blackout Flat Dark Earth Stainless Steel/Nickel 5/8"x24

BEAR CREEK ARSENAL 300 B/O COMPLETE UPPER 7.5 BRL 1:7 TWIST PISTOL LENGTH GAS MLOK

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

Faxon Firearms FXSPT3B105GA9 Sport 300 Blackout 30+1 10.50 Salt Bath Nitride Threaded Barrel, Aluminum Receiver w/Picatinny Rail, M-LOK Handguard, Black Polymer KAK Shockwave Pistol Brace, A2 Style