The Picatinny adapter is 2-piece, with one that inserts into the rear dovetail and a rail that screws down into it. The components was tender and wholly unsatisfactory, so we replaced them with some Quality eight equipment screws. The sole slide of mine that labored was 1 aftermarket slide that https://glock-stabilizer63950.canariblogs.com/rumored-buzz-on-sage-ts870r-42138427