6.03mm AEG Inner Barrel 509mm for M16A1, M16A2, M16VN, AUG SP-4155 NOTE: You can use the

NOTE: You can use the screws from your rear sight to install this RMR mount

The bolt will remain in the forward position once the magazine is empty

Material: nylon plastic

This provides the proven closed-bolt performance of the Fusion Engine and F2 in a fully mechanical and waterproof system with a realistic trigger

CNC Aluminum

6.03mm AEG Inner Barrel 509mm for M16A1, M16A2, M16VN, AUG SP-4155 NOTE: You can use thePrometheus inner barrels come directly from Japan with high quality manufacturing. All Prometheus inner barrels are: 6. 03 mm inner diameter Made of high quality stainless steel Internally polished with a precision crown Made in Japan Part of the Laylax company, which has been offering products on the Japanese market for more than 20 years. Laylax is well known for its high manufacturing quality and precise tolerances.