CMMG, Inc AR-15 Lower Reciever Parts Kit, Black, 55CA601

Luth-AR 18 in Mark 12 Kit Minus Lower Receiver W/Coll. Stock, Black, Carbine, rkm12-18-3m

Luth-AR 18 in Mark 12 Kit Minus Lower Receiver W/Fixed Stock, Black, Rifle, rkm12-18-1m

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

Guntec USA AR-15 Complete 5.56 Upper Receiver W/O Lower Parts Kit, N.3, 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

Luth-AR Lightweight Kit Minus Lower Receiver, W/ Fixed Stock, 5.56Mm, 26In, 16In, Light Weight, Carbine, 1X9, 1/2X28,Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Black, RKL-16-1

Luth-AR 24 in Bull Rifle Kit Minus Lower Receiver W/Fixed Stock, M-Lok, Black, Rifle, rkb-24-1m

Tacfire Complete Upper Receiver, AR-15, Lower Parts Kit, 5.56Mm, 7.5in Barrel, Pistol Length, 7in M-LOK Handguard, Anodized, Black, PK556-LPK

Strike Industries AR Lower Receiver Pro Spring Kit, Black, One Size, SI-AR-LRSK-PRO

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

Luth-AR Bull Rifle Kit Minus Lower Receiver W/Fixed Stock, .223, 31In, 24In, Bull, Rifle, 1X9, 1/2X28, Picatinny, Key MOD, A2 Flash Hider, Anodized, Manganese Phosphate, Silver/ Black, RKB-24-1

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

Luth-AR Lightweight Kit Minus Lower Receiver, W/ Col. Stock, 5.56Mm, 26In, 16In, Light Weight, Carbine, 1X9, 1/2X28,Picatinny, Key MOD, A2 Flash Hider, Anodized, Man. Phosphate

Luth-AR 16 in Bull Rifle Kit Minus Lower Receiver W/Fixed Stock, M-Lok, Black, Rifle, rkb-16-1m

Luth-AR Lower Parts Kit - Builder - .308, LRPK-BLDR-308

Luth-AR Lower Parts Kit - Builder - AR15, LRPK-BLDR

Stag Arms AR-15 Lower Receiver Parts Kit W/ Selector, Left-Handed Selector, STAG310531

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

Evolution Gun Works EVOLVED AR Lower Receiver Parts Kit, Black, 30001

JL Billet AR-15 80% Lower Receiver, Ambidextrous, Type III Hardcoat Anodized, Black, JLB-AR15-80-B

Dark Storm Industries DS-15, AR-15, 5.56x45mm NATO, Upper And Lower Receiver Parts Builder Box For DS-15 Featureless MOE Rifle, Non Threaded, Anodized Black, DSI-DS15-MOE-BBN5-BLK

Guntec USA AR-15 Complete Lower Parts Kit, No Pistol Grip, LPK

Bravo Company MFG Ar-15 Enhanced Lower Parts Kit - BCM-ELPK-FDE

Guntec USA AR .308 Complete Lower Parts Kit W/A2 Pistol Grip, Black, LPK-308-A2

Ncstar Pro Series AR Barrel Lower Receiver Wrench, Tan, VTARW4

Daniel Defense AR-15 Lower Receiver Parts Kit, Semi-Auto

XTS AR-10 Complete Lower Parts Kit, Black, LPK-308

XTS AR-15 Lower Small Parts Kit, Black AR-KIT

Midwest Industries AR-15 Lower Receiver Block, High-Strength Polymer Bench Tool, MILRB