Now available at RSOV.com are the G36 Gas Blowback Series from Army Armament. One of these is the Army R36C/G36C Gas Blowback Rifle that comes with a 30-round gas magazine. The metal parts of this rifle are the 14mm CCW flash hider, rail system, front and rear sights, and the outer barrel. This has a fully adjustable hop-up system and can be powered with 134A Gas/Green Gas/Top Gas.