Palmetto State Armory 16" CHF M4 Carbine 5.56 NATO 1:7 Upper with Geissele 13.5" MK8 M-LOK Handguard

Geissele Automatics 5.56 USASOC Improved Complete Near-Clone AR-15 Upper Receiver - Desert Dirt- 10.3" - Open Box

Geissele Automatics Border Patrol Center Tab MK20 Assembled AR-15 Upper Receiver - 9.6" - BLEMULA

AMERICAN TACTICAL IMPORTS Milsport Upper 5.56 7.5" MLOK No Handle/BCG

Sons of Liberty Gun Works M4-76 5.56 Barreled Upper Receiver - 13.7"

Radical Firearms 16" 5.56 NATO 1:7 Mid-Length SOCOM Barreled Upper - 12" M-LOK FCR Rail - Open Box

VKTR Industries VK-1 5.56x45mm 16" 1:7 M-LOK Rail w/ BCG & CH, Black - V-4027-3410-001-RP

Noveske Rifleworks Gen 4 N4 Light Recon CHF 5.56 Complete AR-15 Upper Receiver - 16" - FDE