ZEV Technologies Firing Pin Safety Spring SKU: SPR-FPS 1 Review | Write a Review Quantity -+ Add to Cart ZEV Firing Pin Safety (FPS) Spring.Ratings & Reviews /5 5 Based on 1 reviews 5 stars 1 reviews 4 stars 0 reviews 3 stars 0 reviews 2 stars 0 reviews 1 star 0 reviews Write a Review Filter By DateBy RatingAll Reviews5 Star Reviews4 Star Reviews3 Star Reviews2 Star Reviews1 Star Reviews 7/2/2018 3:26 pm perf By jazz - hate it when i lose these things!!! haha fast shipping and great springs!