Crusader Steel Outer Barrel for Umarex / VFC UMP GBB
Crusader M4 GBB Rotatable Tactical Sling Swivels-BK
Lonex AEG/이노카츠/WA/LCT/VFC GBB용 강철 Sling Swivel-3Hole
GSI Outer Barrel Lock for MARUI M4 GBB Series [Steel]
LCT GHK M4 GBBR 10.5inch Short Outer Barrel
MADBULL MK18 9.5" Daniel Defense SOPMOD II-RIS II-BK
MADBULL Daniel Defence Licensed M4A1 12.5 inch RIS II-BK
MADBULL MK18 9.5" Daniel Defense SOPMOD II-RIS II-FDE
Madbull Troy BattleRail TRX Extreme 11 inch-BK
Madbull Troy BattleRail TRX Extreme 9 inch-BK
PTS Enhanced Polymer Grip (EPG) for M4 GBBR-BK / DE
Pro-Win GI 30 Style GBB M4 Magazine-51R(Gen.2)
TEAM GBB KSC(KWA) Kriss Vector Silencer(Insert Inner Barrel)
Crusader Lower Receiver End Sling Mount for Umarex / VFC HK417 AEG & GBB