Glock factory MOS plates fit into MOS cutout on slide and has holes to accept the various optics as described below:
GLOCK MOS Adapter 05
Fits MOS Pistol: G20, G21, G22, G23, G35, G40
Fits Optics: Doctor, Meopta, Insight, Vortex, Burris
GLOCK MOS Adapter 06
Fits MOS Pistol: G20, G21, G22, G23, G35, G40
Fits Optics: Trijicon, Ameriglo, Holosun (Except 509, 407K, 507K, EPS MRS & EPS Carry.)
GLOCK MOS Adapter 07
Fits MOS Pistol: G20, G21, G22, G23, G35, G40
Fits Optics: C-More
GLOCK MOS Adapter 08
Fits MOS Pistol: G20, G21, G22, G23, G35, G40
Fits Optics: Leupold, EOtech, Shield
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