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Driven Arms
Overview
The REIN Switch M-LOK Adapter Gen 3 (RSMA G3) is a minimalist plate that mounts a Cloud Defensive Gen 3 REIN switch to an M-LOK handguard using a single slot, screw and nut. Designed by Driven Arms and tested by Cloud Defensive, it snap-fits the switch in place and comes in 1 button and 2 button versions. Mount only, switch not included. Made in the USA with a lifetime warranty. This listing is the 1 Button version.
Prices checked
Builders on GunPartPicker first added the Driven Arms REIN Switch M-LOK Adapter Gen 3 (RSMA G3) - 1 Button to a build in October 2026.
Today the one retailer we track has it in stock. Buying today, the lowest price is $28 at Driven Arms Co.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every switch by how often it shows up in real builds on GunPartPicker.
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