The USP 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 USP AEP (112mm 6.01)
Compatible with the TM USP AEP and clones.
Please ensure the hop rubber fits correctly around the barrel, some modification may be required for fitment in TM clones.
Ideal when paired with the PDI W-Hold AEP hop rubber.