Gunfire does a quick video fo the Umarex H&K PSG1 Gas Blowback Rifle... "A green gas replica of the Heckler & Koch PSG-1 sniper rifle from the Umarex brand is a hot novelty in our store! H&K PSG-1 GBB airsoft replica is a real treat for players looking for an airsoft sniper rifle. The model is made of steel and durable polymer, and it has licensed Heckler & Koch markings. The manufacturer has equipped the Heckler & Koch PSG-1 replica with a blow-back system and integrated RIS rail for mounting the optics. The whole set comes in a solid polymer case. The Umarex sniper rifle is built on pins and shoots only in a single fire mode to increase the realism."