CMMG Mk3 AR-308 Stripped Lower Receiver

Manufactured by CMMG
SKU: 38CA1C3
MPN: 38CA1C3
Manufactured by CMMG
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NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



The CMMG Mk3 AR-308 Stripped Lower Receiver is machined from billet 7075-T6 aluminum to be compatible with LR-308 and SR-25 pattern magazines. Comes with additional features like a flared magazine well for fast mag changes and an enlarged trigger guard that allows the use of winter gloves. The Mk3 AR-10 lower parts group is the best way to finish this lower receiver and be sure that you are using parts that will work with it. Most AR-15 triggers and stock components are compatible with this .308 stripped lower receiver.

  • Machined from 7075-T6 aluminum
  • Black hardcoat anodized finish
  • Compatible with LR-308 and SR-25 pattern magazines
  • Compatible with AR-15 and triggers and stocks components
  • Flared magazine well
  • Integral winter trigger guard
  • Threaded bolt catch roll pin

A leading manufacturer of AR-15 rifles, kits, and accessories, CMMG Inc. was established in 2002. Constantly pushing the edge, CMMG strives to develop and improve bringing you a product lineup that is second to none.
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Caliber Marking.308 Win
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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