I have Kingpins on both equally my rifles and will continue to get far more as my assortment grows. I do want; nonetheless, that the black pins came using a black spring to match but it really is ideal just a similar. five/five for me! Great job guys at AR https://ricardooesfq.blogacep.com/37467639/how-much-you-need-to-expect-you-ll-pay-for-a-good-height-adjuster