The SKS Recoil Buffer fits in the rear of the top assembly and is made to the exacting tolerances to insure a tight fit. An indentation in the Recoil Buffer itself provides a secure resting spot for the recoil spring guide, making assembly much simpler. The SKS Recoil Buffer will fit all variations of Russian and Chinese SKSs. As with the rest of the Recoil Buffer line, installation is a snap and requires no special tools. Much like the Kalashnikov action, the SKS action is super-reliable, but that reliability has a cost. Each time you shoot an SKS the bolt carrier impacts the inside of the top cove. This operation takes its toll on the working mechanism. While not important to a foreign super power that has an arsenal of replacement weapons, it is to you!
By installing an SKS Recoil Buffer you totally eliminate the metal to metal impact of the bolt carrier to the receiver, thereby eliminating the shock to the receiver. The Recoil Buffer also prevents any shock from reaching a scope if you have one installed.