I've Kingpins on both of those my rifles and may continue on to get far more as my collection grows. I do wish; nevertheless, which the black pins came with a black spring to match but it really is ideal just the same. 5/5 for me! Good work guys at https://9kgsexdoll74062.ttblogs.com/11848903/5-easy-facts-about-flexible-welding-platform-described