Viridian RFX45 Low Mounting Adapter

When your red dot or reflex sight needs a stable platform on modern slide cuts, the right adapter bridges the gap between optic and firearm. The Viridian RFX45 Low Mounting Adapter handles this job with straightforward engineering. At TacticCAL Gun Store in Sunnyvale, we stock mounting hardware that works—no guesswork. Need help with FFL transfer in Sunnyvale? We're ready.

Picatinny to ACRO: Direct Footprint Interface

This adapter accepts standard Picatinny rail mounts and converts them to ACRO footprint compatibility. The low-profile design keeps sight height consistent with cowitness setups on most pistol platforms. At 1.61 inches long and weighing under 0.1 pound, it adds minimal bulk. Whether you're building a duty rig or sport-shooting pistol, this hardware handles the transition cleanly. Browse our full California-compliant handgun catalog for compatible platforms. Browse our gun shop.

Frequently asked questions

Will this adapter work with my existing Picatinny-mounted red dot?

Yes. The RFX45 accepts any standard Picatinny rail mount and converts it to ACRO footprint. Check your optic's base mounting interface before ordering to confirm compatibility.

What's the mounting height difference between this and a direct ACRO footprint optic?

This adapter maintains low-profile sight height suitable for cowitness with standard pistol iron sights. Exact height depends on your slide cut, but the 1.61-inch length is engineered for minimal elevation change.

What do I need to bring for DROS in California?

Bring a valid California driver's license or ID card, proof of residency, your Firearm Safety Certificate (FSC), and payment for the firearm and transfer fees. Find gun store Milpitas at TacticCAL.