I've Kingpins on both of those my rifles and can continue to get a lot more as my assortment grows. I do desire; nonetheless, the black pins arrived using a black spring to match however it is ideal just precisely the same. 5/five for me! Terrific career fellas at AR https://xc7a200t-2ffg1156i34319.pointblog.net/the-smart-trick-of-countersunk-locking-pin-that-no-one-is-discussing-75015158