CMMG MK3 Gun Builder's Lower Parts Kit - 38CA61A
Save 17% MSRP: $59.95$49.95
Only 4 left in stock
The 308 version includes LR308 takedown and pivot pins as well as an improved bolt catch. The 308 kits also include a bolt catch screw in place of the AR-15 pin.
Kit Includes:
- Takedown pin
- Receiver pivot pin
- Takedown pin detent (2)
- Takedown pin detent spring (2)
- Hammer and trigger pin (2)
- Safety selector
- Selector detent
- Magazine catch
- Magazine catch spring
- Magazine release button
- Bolt catch
- Bolt catch plunger
- Bolt catch spring
- Bolt catch spring pin
- Buffer retainer and buffer retainer spring.
| Weight | 3.04 oz |
|---|---|
| Dimensions | 7.5 × 3.8 × 0.85 in |
| MPN | 38CA61A |
| UPC | 815835015415 |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Customer Reviews
- Reviews
- Questions
US
Nice AR-10 lower parts kit
CMMG organized the parts in individual bags and that helped in identifying which parts go where. All parts fitted perfectly to my Aero Precision AR-10 lower. My build was smooth and easy with this kit. This kit didn’t come with fire control group but that was okay I used a custom drop in trigger.
USLower parts kit
Was out of stock when I wanted it. They notified me when it was back in stock and shipped quick
US
Parts kit
Very fast shipping and great product
USMagazine catch incorrect for Ar10
Price seemed good for an AR10 LPK. I’ve purchased LPKs from CMMG before and have had no complaints. However this LPK, which is advertised for AR10 does not come with the correct button for the the magazine catch. I had a difficulty installing the magazine catch as the button is too short to engage the threads on the catch. When I was finally able to install the catch, I was limited to a few turns onto the threads before the button was too recessed to be functional. Detents are a tad sharp which cause binding on the take down pins. Guess break in will he needed. Wouldn’t recommend
