HK Army PWR Hex Barrel Back - AC Threads - Dust Graphite SP Amp Marker Upgrades Heavily chamfered breech-end opening helps

Heavily chamfered breech-end opening helps reduce breaks

All in all

+ Ultra Lightweight Flexible TPR Injection

260° Field of Vision

HK Army PWR Hex Barrel Back - AC Threads - Dust Graphite SP Amp Marker Upgrades Heavily chamfered breech-end opening helpsHK 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