APS 3pcs Airtight Rubber Gas Route For APS Marcus Crixus Tokyo Marui 1911 Series GBB Pistols Airsoft MagazinesAPS 3pcs Airtight Rubber Gas Route For APS Marcus Crixus Tokyo Marui 1911 Series GBB Pistols Airsoft Magazines Made out of Rubber. Smoother internal transition improves gas flow. Direct replacement rubber magazine gasket. Designed for APS Marcus and Crixus 1911 Series GBB Pistol Magazine. Compatible with Tokyo Marui 1911 Series GBB Pistol Magazine. Weight Approx 3g (1g each 3pcs pack) Original Packing