Components - Buffer Spring Product Specification LENGHT: 235 to 420mm WIRE DIA: 14 to 18mm OUTSIDE DIA: 85 to 98mm MIDDLE DIA: 71 to 80mm PITCH: 23.26 to 29.78mm ACTIVE TURNS: 9.50 to 13.50 TOTAL TURNS: 10.50 to 15.00 TOTAL COMPRESS LOAD: 828 to 2007 CERTIFICATES CATALOGS