Best red dot for a Glock 43X MOS

A Glock 43X MOS (and 48 MOS) uses a smaller MOS cut than a 19/17 MOS. A 19 MOS-to-RMR plate will not bolt on. You buy two parts: a 43X/48 MOS plate that names the optic, and a red dot that matches that plate. On this catalog the Trijicon pick is RMRcc (3.25 MOA or 6.5 MOA) plus the Trijicon or C&H 43X/48 MOS-to-RMRcc plate. We sell parts, not pistols.

K footprint. Holosun 407K / 507K / EPS Carry sit on a 43X MOS-to-407K/507K or MOS-to-EPS plate (C&H and Night Fision). We list those plates. We do not currently list Holosun-branded optics — if you already own a 507K or EPS Carry, buy the plate, not a second RMRcc. Mepro MPO-DS is RMS-C; it needs an RMSc/K plate, not a full-size RMR plate. Full-size RMR Type 2 on a 43X MOS only if the plate title says 43X/48 MOS to RMR — that is a tall, uncommon stack.

Not this gun. Non-MOS 43X has no MOS holes. 43 (slim) is not 43X MOS. 19 MOS is the large cut — Glock MOS red dots. P365 RMRcc plates are P365 plates.

Sights and holster. Factory 43X irons sit under most K-dots. Night Fision 507K / EPS Carry height sights for G43X are the cowitness set. A plain 43/43X holster may hit the optic; prefer MOS, optic, RDS, or the sight name. Light-bearing (TLR-7 Sub) is a separate SKU from an optic-ready holster — Glock 43 CCW holster.

Search 43X MOS PLT, RMRCC, or 43X 407K. Supplier titles keep 43X, 48 MOS, PLT, and RMRCC.

Glock 43X parts · 43X MOS plates · Red dots · 19/17 MOS red dots · MOA