This IWI Tavor SAR, X95 Firing Pin with Spring is an original factory replacement firing pin for your Tavor SAR or Tavor X95 in 5.56 NATO or .300 Blackout. No gunsmithing needed. Please follow the following steps in the Tavor SAR manual P/N 08011011300:Please follow these steps in order in your Tavor SAR manual: Section 14.1.3, Section 14.1.4, Section 14.2.1 For any other Tavor SAR manual please follow the following steps:Please follow these steps in order in your Tavor SAR manual: Section 15.1, Section 15.2, Section 15.4 For the Tavor X95:Please follow these steps in order in your Tavor X95 manual: Section 14.1.2, Section 14.1.3, Section 14.2.1