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CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit 38CA62B Color: Black, Caliber: .308 Winchester, $8.16 Off w/ Free Shipping

CMMG Mk3 ZEROED Lower Parts Kit, AR10/LR-308, 38CA62B
CMMG Mk3 ZEROED Lower Parts Kit, AR10/LR-308, 38CA62B
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CMMG Mk3 ZEROED Lower Parts Kit, AR10/LR-308, 38CA62B

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Questions & Answers
Will this fit a DPMS Gen1 lower? Expert Answer

Yes, the CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit will be compatible with a Gen 1 DPMS lower receiver.

by Ethan, Gear Expert, August 15, 2023
Will this fit an aero precision apar308005c ? Which buffer tube kit do you recommend? Can you answer this question?
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Awesome lower parts kit by Tolly, Verified Owner, December 25, 2023
This is a great kit. I put it in a aero lower really nice mag and bolt release. Also like the selector switch. I didn't use grip or trigger went with a 2 stage.
1/1 found this helpful
Most Recent Reviews
Items missing, some doubled by Ray, Verified Owner, April 24, 2025
The package was missing the trigger and hammer springs, the disconnector, and its spring. It also contained two safety groups.
Most Recent Reviews
CMMG delivered time and time again! by David, Verified Owner, February 24, 2024
CMMG tim and time again deliveres. I have mever had a part that didn't fit or fail in the field. On all of my builds I insist on CMMG and i know I can come to Optics Planet snd always find what i need at competitive pricing.
Most Recent Reviews
good trigger by muley, Verified Owner, August 20, 2023
I think this is a good trigger for the money. Like all milspec triggers it needed a little polishing but not bad. I really liked the grip. I did not like the safety selector switch at all I bought another one from another company. Overall it’s pretty...
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Read All 4 Reviews
Color:
Black
Caliber:
.308 Winchester
Gun Make:
AR Platform, CMMG
Gun Model:
AR-10, CMMG Mk3
Condition:
New

Code: 2CM-LPK-CP35-38CA62B

MPN: 38CA62B

UPC: 810097502321

List: $134.95Save $8.16
$126.79

Product Info for CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit

Ready to complete your AR10/LR-308 lower receiver? The CMMG ZEROED AR10 (Mk3/.308WIN) lower parts kit is just the thing you need. All parts are made in specialized factories and comes in convenient color-coded packets to make assembly and part identification a breeze. Check out our interactive install walkthrough video below or read the CMMG Resources LPK Install article for an in-depth breakdown. Dont forget a Buttstock or Brace kit to complete your pistol or rifle lower. Not all .308 lowers are the same. Their kit is designed to work with our lowers (Gen 1 DPMS High-Pattern LR-308) and meet or exceed mil-spec. They would recommend checking with the manufacturer of your lower for compatibility of parts if you are not using our receiver.image

WARNING: California`s Proposition 65

Specifications for CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit:

Manufacturer: CMMG
Color: Black
Caliber: .308 Winchester
Gun Make: CMMG, AR Platform
Gun Model: CMMG Mk3, AR-10
Gun Type: Rifle
Condition: New

Package Contents:

  • CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit
  • ZEROED Extended Bolt Catch Mk3
  • Bolt Catch Plunger Spring & Screw Pin
  • Trigger & Trigger Spring
  • Disconnector & Disconnector Spring
  • Hammer & Hammer Spring
  • Trigger/Hammer Retaining Pins
  • ZEROED 60/90 Adjustable Ambi Safety Detent & Spring
  • ZEROED Ambi Magazine Catch & Spring
  • ZEROED Extended Magazine Release Button
  • Mk3 HD Pivot/Takedown Pins Detents & Springs
  • ZEROED Pistol Grip Grip Screw & Washer
  • Buffer Retainer & Spring

CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit Orderable Models

List of Orderable Models

  • CMMG Mk3 ZEROED Lower Parts Kit, AR10/LR-308, 38CA62B , MPN: 38CA62B , UPC: 810097502321 , Code: 2CM-LPK-CP35-38CA62B

CMMG Mk3 AR10/LR-308 ZEROED Lower Parts Kit Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, CMMG Mk3 ZEROED Lower Parts Kit, AR10/LR-308, 38CA62B , MPN: 38CA62B-DEMO , Code: 2CM-LPK-CP35-38CA62B-DEMO
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Last updated 2026-07-06 UTC.