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The S63 Pro Barrel System construction comprises of 3 main elements: At the front is a precision engineered tip for exceptional accuracy
so it has been designed to significantly improve the experience of wearing this goggle for any period of time
but because of it's unique consistent diameter construction from top to bottom it holds up to 30 more rounds
+ x2 013 NBR 70 O-Ring
+ Hose less Air Transfer System
HK Army PWR Hex Barrel Back - AC Threads - Dust Blue Sale Tanks The S63 Pro Barrel SystemHK Army PWR Hex Barrel Back AC Threads *Listing is for back only and will not include an insert* The HK Army Hex PWR barrel back is built for consistency, durability, and clean performance. Machined from high grade aluminum, it features signature Hex windowing with subtle fractal detailing for a premium, modern look. The precision cut windows expose the Vector PWR insert inside, promoting smooth airflow and reliable shot consistency. Compatible with
