C&H Precision RMSc Base for Beretta A300/A400/1301

The C&H Precision RMSc Base (brand part no. BRTA-RMSC) mounts a Shield RMSc-footprint reflex sight directly to the Beretta A300, A400, and 1301 shotgun receivers, and is compatible with the Holosun 407K and Holosun EPS reflex sights specifically. It gives clays and defensive shotgun shooters a fast, both-eyes-open sight picture without stacking a tall adapter onto the receiver. C&H machines the base to each receiver’s factory drilling pattern, so it seats flush and returns a repeatable zero. It’s a direct, receiver-specific mount rather than a universal rail adapter, keeping the reflex sight low and close to the bore line.

Key Specifications

• Beretta A300, A400, and 1301 shotgun receiver compatibility.
• Shield RMSc reflex sight footprint.
• Holosun 407K and EPS reflex sight compatibility.

Frequently Asked Questions

Which Beretta shotguns does this base fit? The A300, A400, and 1301.

Which reflex sights does this support? The Holosun 407K and Holosun EPS, using the Shield RMSc footprint.

Buy the C&H Precision RMSc Base for Beretta A300/A400/1301

Order it from our Lubbock, Texas gun shop for fast, insured shipping — it’s a direct accessory purchase with no FFL required. Check out our full scope bases lineup for more receiver-specific mounting options.