Hammer Spring For Burst Trigger Pack
The HK German factory intermediate poundage “satin” gray hammer spring is found in all 9mm, 40/10 and .556/223 burst trigger packs and has proven to be the most reliable and longest lasting spring for burst trigger packs and trigger packs in general.
Works in ALL burst packs and any Navy or SEF style trigger packs in the following calibers:
Please note: In some cases the burst hammer spring can be used in .308 trigger packs but may promote light firing pin strikes with hard primers.
- Origin: German
- Brand: Heckler & Koch