View Full Version : AR-15 .223 vs 7.62x39 Firing Pin

February 17, 2012, 08:54 PM
Since im going to a gun show tomorrow i wanted to pick up an extra firing pin for my Bushmaster 7.62x39 AR15. Is there any differences in the firing pin between a .223/5.56 & 7.62x39? Pretty much all firing pins for the 7.62 caliber AR's i have seen for sale are considered "modified" to shoot harder primers with steel cased ammo, but can't seem to find the answer im looking for.

February 20, 2012, 07:27 AM
The link below shows bolt carrier parts. The 7.62x39mm firing pin different according to Model 1 Sales.


February 20, 2012, 07:12 PM
the model one firing pins they sell are basically modified firing pins from factory firing pins to help ignite stronger primers which are usually in steel cased ammo.