Description
HK Heckler & Koch HK Pin – Roller – Locking – Bolt Heads HK roller retainer pin or clamping sleeve (holds roller retainer plate in place). Each retainer pin works with all roller retainer plates & springs. All 3 types including oval-shaped roller retainer plates, roller retainer “S” springs, and the latest style roller retainer F plates.
- 1st Gen Oval Shaped Bolt Head
- 2nd Gen Roller Retainer Spring
- 3rd Gen Roller Retainer Plate
