The M9A1 AEP Stainless Steel barrel from PDI Japan represents the finest level of AEP upgrades on the market.
It is our go-to barrel for all AEP builds due to the tight but consistent inner bore and the extremely reliable tolerances.
PDI Steel barrels are cold hammer forged with a polished crown and an average sized hop window. The tighter bores are ideal for improving the cylinder to barrel air ratio to maintain energy output with heavier ammo.
PDI Stainless Inner Barrel for TM M9A1 AEP (112mm 6.01)
Compatible with the Tokyo Marui M9A1 AEP.
Ideal when paired with the PDI W-Hold AEP hop rubber.