HK Army Elite Thread/Fill Nipple Protector Kit - Nova Tracer Units and Flash Hiders and the trigger shoe itself

and the trigger shoe itself that the player interacts with

Durable metal barrel

Sturdy all metal construction

torque resistance

HK Army Elite Thread/Fill Nipple Protector Kit - Nova Tracer Units and Flash Hiders and the trigger shoe itselfThe HK Army Elite Protector Kit offers comprehensive protection for your paintball tank by safeguarding your regulator threads from damage and shielding your fill nipple from dirt debris. Elite Thread Protector When you're storing or transporting your air tanks, just screw on the HK Army Thread Guard to keep those tank threads safe from damage. Plus, it comes with two spare o rings, so you're always ready when something goes wrong at the field. Elite