CMMG Zeroed Ambi Extended Magazine Catch

The CMMG Zeroed Ambi Extended Magazine Catch (brand part number 55AFF89) brings true ambidextrous operation to an AR-15 lower, extending CMMG’s original ambi mag catch design with a longer release bar for more leverage. Left-handed shooters get the same fast, positive reload that right-handed shooters have always had, without reaching across the receiver. Installation is a two-step process: screw the adapter button into the catch, then snap the extended release bar onto the adapter. CMMG machines the extension from steel and serrates its surface so a thumb or trigger finger gets solid traction even under recoil or with gloves on.

Key Specifications

• Adds true ambidextrous magazine release operation to any AR-15 lower.
• Fitted with an extended release bar for more leverage on the reload.
• Machined from steel for a durable, long-wearing release surface.
• Textured with a serrated surface for reliable traction under recoil or with gloves.
• Installs with a simple screw-in adapter and snap-on extension, no gunsmithing needed.
• Weighs roughly 0.03 lb, adding negligible weight to the lower.

Frequently Asked Questions

Does this work for left-handed shooters? Yes, it adds true ambidextrous magazine release operation to a standard AR-15 lower.

Is it hard to install? No, it’s a two-piece design that screws in and snaps together with no gunsmithing required.

What is it made of? Steel, with a serrated release surface for reliable traction.

Buy the CMMG Zeroed Ambi Extended Magazine Catch

Speed up your reloads from either side of the gun. Order it from our CMMG lineup, part of our AR magazine catch/release selection, at our Lubbock, Texas gun shop for fast, direct shipping.