HK UMP Firing Pin - Retainter Pin
 
This is the pin that trips the trip lever on the UMP lower.

Heckler & Koch, .40 S&W/.45 ACP/9mm Firing Pin Retainer Pin, Fits HK UMP Rifle

  • Brand: Heckler & Koch
  • Product Code: HKP-01894
  • Availability: In Stock
  • $20.99 USD