PewDeals logo
Menu
DealsProductsMerchantsCompareBlogBrands
Types
RifleHandgunAmmunitionShotgunOpticNFAPartsAccessoryGear
Calibers
CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring
In Stock

Caliber

308/7.62x51

Type

parts

Last Seen

May 19, 2026

CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring

Sold byMidwayUSA•Posted Apr 27, 2026
Compare prices for CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring

$7.39

Price and stock data refresh continuously from MidwayUSA.

Buy on MidwayUSA

Deal Summary

Price History

Deal Details

CMMG offers replacement components for the AR-15 that are made to strict military specifications. These high quality components will provide excellent fit and reliable function in your AR series rifle and are perfect for upgrading existing components or replacing worn or broken parts.

Other Offers for This Product

Active offers from your catalog for CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring.

View full product comparison

Comparing 7 retailers carrying this product

Lowest Price: $6.99

Highest Price: $17.49

You Save: $10.50

Avg Discount: 11% off

Best Price
Ar-15 Mk4 Receiver Extension Nut

Ar-15 Mk4 Receiver Extension Nut

CmmgBrownellsSKU/UPC: 100044623
$6.99$8.46Save 17%
View at Brownells
Current Deal
CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring

CMMG Mk4 AR-15, LR-308 Buffer Tube Lock Ring

CmmgMidwayUSASKU/UPC: 687407
$7.39
View at MidwayUSA
CMMG Inc Nut Receiver Extension MK4

CMMG Inc Nut Receiver Extension MK4

CmmgOptics PlanetSKU/UPC: 2CM-RBT-55CA9CB
$8.99$17.99Save 50%
View at Optics Planet
CMMG Receiver Extension Nut for the Mk4

CMMG Receiver Extension Nut for the Mk4

CmmgGrabAGunSKU/UPC: GAG_RES-CMMG55CA9CB
$12.89
View at GrabAGun