CMMG MK3 .308 Lower Parts Kit

CMMG MK3 .308 Lower Parts Kit

This comprehensive lower parts kit contains everything you need to complete your CMMG MK3 or compatible LR308-pattern lower receiver. Whether you're building your first rifle or adding to your collection, this kit streamlines the assembly process by providing all the essential components in one package.

What's Included

The kit features a complete set of mil-spec quality parts organized by function:

Takedown System

• .308 Takedown Pivot Pin
• .308 Receiver Pivot Pin
• Takedown Pin Detents (2)
• Takedown Pin Detent Springs (2)

Bolt Catch Assembly

• Bolt Catch
• Bolt Catch Plunger
• Bolt Catch Screw
• Bolt Catch Spring

Buffer System

• Buffer Retainer
• Buffer Retainer Spring

Trigger Group

• Hammer and Trigger Pins (2)
• Hammer
• Hammer Spring
• Trigger
• Trigger Spring
• Disconnect
• Disconnect Spring

Magazine and Safety Controls

• Magazine Catch
• Magazine Catch Spring
• Magazine Release Button
• Safety Selector
• Selector Detent
• Selector Detent Spring
• Lock Washer
• Pistol Grip Screw
• Pistol Grip

Compatibility and Quality

These parts are engineered to work seamlessly with CMMG MK3 lowers and most LR308-type lower receivers. All components meet or exceed military specifications for reliability and durability.

Building Your Rifle

To complete your lower receiver assembly, simply combine this kit with a buttstock kit of your choice. This modular approach gives you flexibility in customizing your rifle to your specific needs and preferences.