Skip to main content
We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal NatchezDeal SitkaDeal 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Stores
CMMG RECEIVER EXTENSION/STOCK KIT by Cmmg -
12% off

Product Description

CMMG AR-15 RECEIVER EXTENSION AND STOCK KIT - CARBINE 6 POSITIONa Combine this kit w/your choice of lower parts kit to complete your lower groupa Includes CMMG receiver extension buffer assembly action spring & butt stock assemblya Carbine 6 position receiver & butt stock assemblya MIL-SPEC

CMMG RECEIVER EXTENSION/STOCK KIT

at GrabAGun
Browse all GrabAGun deals
$87.49 $99.95 12% Discount
You save $12.46
In Stock at GrabAGun
Price verified 2d ago
Buy Now at GrabAGun
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Cmmg
MPN 55CA634
Cmmg

Shop more Cmmg Gun Parts

All 974 in-stock Cmmg Gun Parts from 29 stores →

More from Cmmg

GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG ZEROED 22 Mute-ish .22 LR 1/2x28 CMMG ZEROED 22 Mute-ish .22 LR 1/2x28 View Details
$149.99 $199.95
25% off
Buy Now · $149.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Banshee MK3 Complete Upper 8.6 Blackout 12.5 Barrel CMMG Banshee MK3 Complete Upper 8.6 Blackout 12.5 Barrel View Details
$989.99 $1099.95
10% off
Buy Now · $989.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Barrel Sub-Assembly 6mm ARC 16.1 Threaded Barrel for AR-15 CMMG Barrel Sub-Assembly 6mm ARC 16.1 Threaded Barrel for AR-15 View Details
$209.99 $239.95
12% off
Buy Now · $209.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Zeroed B Adapter RBB Brake for PS90/P90 M12x1.0 LH CMMG Zeroed B Adapter RBB Brake for PS90/P90 M12x1.0 LH View Details
$84.49 $99.95
15% off
Buy Now · $84.49
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Mk4 Zeroed Banshee Tungsten / Black 9mm 6.5 Threaded Barrel 33-Rounds CMMG Mk4 Zeroed Banshee Tungsten / Black 9mm 6.5 Threaded Barrel 33-Rounds View Details
$2199.99 $2224.95
1% off
Buy Now · $2199.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG AR15 H3 Buffer Assembly Silver CMMG AR15 H3 Buffer Assembly Silver View Details
$58.39
Buy Now · $58.39
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Banshee Mk4 Complete Upper .338 ARC 10.5 Barrel CMMG Banshee Mk4 Complete Upper .338 ARC 10.5 Barrel View Details
$849.99
Buy Now · $849.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Banshee MK3 Complete Upper 8.6 Blackout 16.1 Threaded Barrel CMMG Banshee MK3 Complete Upper 8.6 Blackout 16.1 Threaded Barrel View Details
$919.99 $1149.95
20% off
Buy Now · $919.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Resolute Mk4 Complete Upper .22 LR 16.1 Barrel CMMG Resolute Mk4 Complete Upper .22 LR 16.1 Barrel View Details
$639.99 $849.95
25% off
Buy Now · $639.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Zeroed Picatinny End Cap for AR-15 .22 LR CMMG Zeroed Picatinny End Cap for AR-15 .22 LR View Details
$40.99 $44.95
9% off
Buy Now · $40.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Hot 🔥
CMMG Mk4/AR-15 Lower Receiver Assembly Tungsten CMMG Mk4/AR-15 Lower Receiver Assembly Tungsten View Details
$109.99 $174.95
37% off
Buy Now · $109.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Banshee MK4 SBR Flat Dark Earth 5.56 10.5 Barrel 30-Rounds CMMG Banshee MK4 SBR Flat Dark Earth 5.56 10.5 Barrel 30-Rounds View Details
$1289.99
Buy Now · $1289.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG AR-15 Barrel and Bolt Group Kit Silver / Black .22 LR 9 Barrel CMMG AR-15 Barrel and Bolt Group Kit Silver / Black .22 LR 9 Barrel View Details
$289.99
Buy Now · $289.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG AR-15 Buffer Assembly H2 CMMG AR-15 Buffer Assembly H2 View Details
$92.89 $139.95
34% off
Buy Now · $92.89
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG AR-15 Hammer Assembly CMMG AR-15 Hammer Assembly View Details
$18.59
Buy Now · $18.59
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Banshee Fixed Ejector Upper Group 9mm 8 Barrel for Mk4/Mk9/Mk17/MkGs CMMG Banshee Fixed Ejector Upper Group 9mm 8 Barrel for Mk4/Mk9/Mk17/MkGs View Details
$769.99 $974.95
21% off
Buy Now · $769.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Zeroed Enhanced Lower Parts Kit MK3 CMMG Zeroed Enhanced Lower Parts Kit MK3 View Details
$209.99 $259.95
19% off
Buy Now · $209.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Hot 🔥
CMMG Mk4/AR15 Lower Receiver Assembly Coyote Tan CMMG Mk4/AR15 Lower Receiver Assembly Coyote Tan View Details
$109.99 $174.95
37% off
Buy Now · $109.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG MK4 Complete Upper Coyote Tan 5.56 / .223 Rem 14.5 Threaded Barrel CMMG MK4 Complete Upper Coyote Tan 5.56 / .223 Rem 14.5 Threaded Barrel View Details
$129.99 $149.95
13% off
Buy Now · $129.99
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Mk4/AR-15 Upper Receiver Assembly Tungsten 5.56 / .223 Rem 14.5 Barrel CMMG Mk4/AR-15 Upper Receiver Assembly Tungsten 5.56 / .223 Rem 14.5 Barrel View Details
$129.99 $149.95
13% off
Buy Now · $129.99
GrabAGun