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
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$20.99 USD