Midwest Industries .308 AR Lower Receiver Block

Luth-AR Mark 12 Kit Minus Lower Receiver, W/ Collapsible Stock, 5.56Mm, 27In, 18In, Government, Rifle, 1X9, 1/2X28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, RKM12-18-3

Luth-AR Bull Rifle Kit Minus Lower Receiver W/Fixed Stock, .223, 26In, 16In, Bull, Carbine, 1X9, 1/2X28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, RKB-16-1

Luth-AR Bull Rifle Kit Minus Lower Receiver W/ Collapsible Stock, .223, 26In, 16In, Bull, Carbine, 1X9, 1/2X28, Picatinny, Keymod, A2, Anodized, Manganese Phosphate, Silver/Black, RKB-16-3

Luth-AR 16 in Light Weight 1-7 Kit Minus Lower Receiver W/Fixed Stock, Keymod, Black, Rifle, RKL7-16-1

Strike Industries AR Enhanced Lower Receiver Parts Less Trigger, Hammer And Disconnector, Black, One Size, SI-AR-E-LRPLT

Wilson Combat Lower Receiver Small Parts Kit, AR-Style, TR-LOWERK

Luth-AR Lower Receiver Parts Kit - .308, LRPK-308

Guntec USA AR Complete .308 Upper Receiver W/O Lower Parts Kit, N.1, 15in M-Lok Handguard, .308 Gen 2 M.L.S. Stock Assembly, Mid-Length, .750 Gas Block, 16in M4 4150 Barrel, 1-10 Twist, 5/8X24 A2 Bird

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.5, 15in Ultralight Series M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.1, 15in Ultralight M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-7 Twist

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.6, 15in Air-Lok M-Lok Handguard, MLS Gen 2 Stock Assembly, Carbine Length, .750 Gas Block, 16in 5.56mm M4 4150 Barrel, 1-7 Twist, 1