The Backplate 17/19 Changes the compatibility of K.P.O.S G2 21 to fit Glock 17,18,19, 22, 23, 25, 31, 32, 34, 35, 37, 38.
K.P.O.S G2 for Glock 20, 20sf, 21 & 21sf, 29, 30.
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