Primer: Berdan, Corrosive- Please be sure to clean your firearm soon after shooting.
Here is an excellent and easy guide to effectively cleaning your gun after shooting corrosive ammo. http://www.pewpewtactical.com/clean-corrosive-ammunition/
Bullet Type: FMJ, Full Metal Jacket
Bullet Weight: 123gr
Bullet Jacket: Copper
Case: Brass
Primer: Berdan, Corrosive
Amount: 15 Round Box
Notes: Beautiful surplus 1990's Yugoslavian 7.62x39 ammunition. This is the best shooting 7.62x39 ammunition available. Features a 123grn lead core copper jacketed bullet, brass case, and berdan corrosive primer.