This firearm is classified as a Pistol and not a Short Barreled Rifle (NFA regulated items require ATF approval and a tax stamp). AR-15 Aeroknox AX-15 10.The MK18 AR15 style Pistol is inspired by the original MK18, which has been extremely popular within the Law Enforcement and Special Operations communities.AR-15 Unique-ARs Wing & Skull 12 inch handguard.AR-10 CMMG MK3 RML15 15 inch M-LOK handguard.AR-10 CMMG MK3 RML9 9 inch M-LOK handguard.AR-10 Lancer LCH7 12.5 inch M-LOK handguard.AR-15 Geissele SMR MK16 13.5 inch M-LOK handguard.AR-15 Geissele SMR MK16 9.5 inch M-LOK handguard.AR-10 Noveske SWS N6 10.5 inch handguard.AR-15 Strike Industries Viper carbine length M-LOK handguard.HK 416A5 Strike Industries CRUX 15 inch M-LOK handguard.AR-15 STNGR VYPR 10 inch M-LOK handguard.HK 416A5 Midwest Industries 9 inch M-LOK handguard.MPX Midwest Industries 6.5 inch M-LOK handguard.MPX Midwest Industries 4.5 inch M-LOK handguard.MPX Midwest Industries 14 inch M-LOK handguard.HK 416A5 Midwest Industries 13.5 inch M-LOK handguard.MPX Midwest Industries 10.5 inch M-LOK handguard.AR-15 Magpul MOE SL medium length M-LOK handguard.AR-15 Magpul MOE SL carbine length M-LOK handguard.HK 416A5 Quad Rail handguard with flip-up front sight.AR-15 War Sport LVOA-C handguard (Black).AR-15 War Sport LVOA-S handguard (Black).AR-15 Alexander Arms MK10 rifle length handguard.AR-15 Daniel Defense RIS II FSP 9.5 handguard (Coyote Brown).AR-15 Daniel Defense RIS II 9.5 handguard.

AR-15 Daniel Defense RIS II 12.25 handguard (Coyote Brown).AK TDI X47 tactical handguard rail system.AK Zenit B-30 handguard with B-31S upper handguard rail.AKS-74U CAA XRSU47SU tactical handguard.AK Strike Industries TRAX 2 handguard extension.SOK-12 Leapers UTG PRO MTU002 Short Top aluminum handguard.SOK-12 Leapers UTG PRO MTU002 Long Top aluminum handguard.AK Zenit B-10M handguard with B-19 upper mount

10 inch quad rail mk18