Commonly Purchased with Lower Parts Kit, Mk3
Barrel and Collar Kit, 4.5" MT 4140CM, 22LR
Starting at
$174.95
Barrel and Bolt Group Kit, 4.5" MT 4140CM, 22LR
Starting at
$299.95
Charging Handle Assembly, 22LR AR Conversion
Starting at
$19.95
Ambidextrous Safety Selector Kit, AR15
Starting at
$29.95
Parts Kit, AR15, Ambi-Magazine Catch, CMMG Logo
Starting at
$39.95
Ejection Port Cover Kit, Mk3
Starting at
$14.95
Forward Assist Kit
Starting at
$16.95
Magazine, Mk4/AR15, 22LR, 25rd
Starting at
$24.95
Parts Kit, DISSENT, Guide Rods and Springs
Starting at
$24.95
Lower Parts Kit, Mk3
All the parts you need to get started on your Mk3 build in convenient color-coded packets to simplify assembly. Compatible with CMMG® Mk3 and most LR-308 type lowers. Check out our LPK Install resource article for an interactive assembly video and in-depth breakdown. Combine this kit with a Buttstock or Brace kit to complete your lower group. All CMMG products come with our Lifetime Quality Guarantee.
Kit Includes:
- Bolt catch
- Bolt catch screw-in pin
- Bolt catch plunger
- Bolt catch spring
- Trigger
- Trigger spring
- Disconnector
- Disconnector spring
- Hammer
- Hammer spring
- Trigger/hammer retaining pins
- Safety, detent, & spring
- Magazine catch, spring, & release button
- Pivot/takedown pins, detents, & springs
- A2-style pistol grip/grip screw & washer
- Buffer retainer/spring
**Not all 308 lowers are the same. Our kit is designed to work with our lowers and are “Mil-Spec”. We would recommend checking with the manufacturer of your lower for compatibility of parts if you are not using our receiver**
Specifications
| Platform | Mk3 |
| Pistol Grip | CMMG A2 |
| Trigger Type | Mil-Spec Single Stage |