Bolt assemblies are no longer available. Check the related parts to see if the individual part you need is still available. The 1 back bolt oring is 130731-000, the 2 front bolt orings are 136952-000. 165608-000 V3, 134676-000, 166099-000, 164638-000, 1175-131824-000 Bolt Assemblies will also work. If your Gun has a Cocking Pin with different size diameters above and below the locking groove, you'll need to upgrade to the Cocking Pin 131210-000.