The Fightlite Industries MCR Bolt Catch is a purpose-built component designed specifically for MCR upper receiver assemblies while still fitting a standard mil spec AR15, M4, or M16 lower receiver. Its profile provides the extra clearance needed for the wider MCR upper, helping ensure reliable bolt hold-open function and smooth operation when paired with this unique belt-fed system.

This bolt catch is ideal for shooters who run an MCR upper on a mil spec lower and want a dedicated part that maintains proper geometry and function. Whether you are setting up a range rifle, conducting training, or configuring a specialized build, the MCR Bolt Catch offers a straightforward way to keep your MCR system running correctly, backed by Fightlite Industries’ focus on practical engineering and dependable performance.

• Manufacturer: Fightlite Industries
• Model: MCR Bolt Catch
• Make/Model Compatibility: Fits mil spec AR15/M4/M16 lower receivers
• Intended Use: Provides necessary clearance for MCR upper receiver assemblies