HK Army Hostile XLP Regulator - Side Port - Black Edge simply assemble upper and bolt

simply assemble upper and bolt in the empty hop unit as per the tutorial video and drill through

- Adjustable Blowback part for turning original Blowback to Light Low Blowback

Who are BLS

Knurled thread protector

HK Army Hostile XLP Regulator - Side Port - Black Edge simply assemble upper and boltThe Hostile Airsoft XLP Regulator is Engineered from tough, high grade aluminum, this regulator lets you dial in your output pressure from 40psi to 150psi for spot on performance. Equipped with a quick disconnect fitting, it's made for quick disconnect hose setup, so you spend less time gearing up and more time in the game. The rapid recharge rate keeps every shot steady with consistent chronograph FPS, while the field tournament lock has you covered