Maple Leaf 6.04 Crazy Jet Inner Aerodynamic Barrel for Marui / Stark Arms / WE / KJW GBB Pistol (138mm) Category_AEG M4A1 Carbine Tokyo Marui SCAR-H Recoil Shock

Tokyo Marui SCAR-H Recoil Shock AEG (Dark Earth)

there is no chance of catching that upper tooth as you holster

-- Metal Hop up version

Tokyo Marui M4 CRW AEG (High Cycle)

This is just resembling the automatic feature of SPAS 12

Maple Leaf 6.04 Crazy Jet Inner Aerodynamic Barrel for Marui / Stark Arms / WE / KJW GBB Pistol (138mm) Category_AEG M4A1 Carbine Tokyo Marui SCAR-H Recoil ShockSuitable for Marui SA WE KJW compatible GBB pistols 138mm Length (G17L , WE Desert Eagle. 50 GBB) 6. 04mm~ Inner Diameter Pressure diverting design, openings in stainless front sleeve divert high pressure gas, surrounds actual barrel opening to guide exiting BB along its flight path, resulting Copper Build Material < All Available Length >