Strike Industries Modular Magazine Catch – Black (SI-AR-MMR)

Customize your lower receiver ergonomics with the Strike Industries AR Modular Magazine Release (MMR) in Black. Designed for ultimate adaptability, the MMR allows you to swap between different magazine button profiles quickly without disassembling or removing the magazine catch assembly from your lower receiver.

Innovative Toolless Modular Swaps

The SI MMR features a patent-pending quick-change system. Using a simple tool or punch, press the magazine button adapter to instantly swap between three included button styles: Standard, Extended, and Oversized. Fine-tune your weapon controls for tactical gloves, competition speed, or standard carry in seconds—whether at home or at the range.

Heavy-Duty Construction & Tactile Control

Built for hard use, the kit pairs lightweight, aggressively textured polymer magazine buttons with a high-strength SUS630 stainless steel shaft sleeve and button adapter. The package includes a heavy-duty steel magazine catch and spring, providing a complete, drop-in assembly for standard AR-15 and AR-10 lower receivers.

Key Features

• Toolless Button Swaps: Swap magazine button profiles on the fly without removing the main magazine catch.
• 3 Button Options Included: Comes with Standard, Extended, and Oversized textured polymer buttons.
• SUS630 Stainless Steel Core: Stainless steel shaft sleeve and adapter ensure maximum strength and smooth operation.
• Complete Drop-In Assembly: Includes enhanced steel magazine catch, spring, adapter, and all three polymer buttons.
• Textured Ergonomic Purchase: Non-slip texturing provides positive tactile engagement under fast-paced reload conditions.