XP hammer springs improve common ignition problems when using hard primer ammunition.
Note: For use in semi-auto models only.
Note: For use in semi-auto models only.
Wolff, XP Hammer Spring - Pack of 3, fits Colt AR15/M16, M4/CAR15 SA
- Brand: Wolff Gunsprings
- Product Code: WLF-30094
- Availability: In Stock
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$18.99 USD