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 AR-15 A1 Receiver Extension Anodized Black by Cmmg -

Price history at GrabAGun

$43$40Oct 2026Oct 28, 2026

Recorded at GrabAGun since Oct 9, 2026: low $40.39 (Oct 9, 2026), high $42.69 (Oct 26, 2026). Last checked Oct 26, 2026.

From the store's product feed and AvantLink's price records; feeds can lag the store's own site.

Product Description

Get the best deal on the CMMG A1 55CA9B7 Buffer Tubes at GrabAGun.com. Get the best deals on Buffer Tubes for sale online at GrabAGun! CMMG for sale online. Flat rate shipping on all guns and ammo with the best prices around!

CMMG AR-15 A1 Receiver Extension Anodized Black

at GrabAGun
Browse all GrabAGun deals
$42.69
In Stock at GrabAGun
Price verified 1d ago
Buy Now at GrabAGun
Secure checkout Easy returns
or compare prices
Amazon logo Amazon eBay logo eBay

Product Details

Brand Cmmg
MPN 55CA9B7
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
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
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
CMMG Pistol Tube Assembly for AR-Platform CMMG Pistol Tube Assembly for AR-Platform View Details
$45.59 $49.95
9% off
Buy Now · $45.59
GrabAGun
TLO Outdoors
Last Updated:
Oct 26, 2026 06:06 AM
CMMG AR-15 Carbine Buffer Assembly, Mil-Spec Replacement for Carbine Receiver Extension 55CA977 CMMG AR-15 Carbine Buffer Assembly, Mil-Spec Replacement for Carbine Receiver Extension 55CA977 View Details
$32.98
Buy Now · $32.98
TLO Outdoors
TLO Outdoors
Last Updated:
Oct 26, 2026 06:06 AM
CMMG AR-15 Carbine Receiver Extension Kit, 6-Position Mil-Spec Buffer Tube Set 55CA6C7 CMMG AR-15 Carbine Receiver Extension Kit, 6-Position Mil-Spec Buffer Tube Set 55CA6C7 View Details
$68.98 $74.95
8% off
Buy Now · $68.98
TLO Outdoors
TLO Outdoors
Last Updated:
Oct 26, 2026 06:06 AM
CMMG AR-15 A1 Fixed Stock & Rifle Receiver Extension Kit w/ Buffer and Spring 55CA646 CMMG AR-15 A1 Fixed Stock & Rifle Receiver Extension Kit w/ Buffer and Spring 55CA646 View Details
$112.98
Buy Now · $112.98
TLO Outdoors
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG 55CA9A7 AR-15 A1 Buffer Assembly CMMG 55CA9A7 AR-15 A1 Buffer Assembly View Details
$27.59
Buy Now · $27.59
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Hot 🔥
CMMG RECEIVER EXTENSION KIT PSTL CMMG RECEIVER EXTENSION KIT PSTL View Details
$54.59 $84.99
36% off
Buy Now · $54.59
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
Sold Out
CMMG Buffer Assembly CMMG Buffer Assembly View Details
$34.29 $34.38
Buy Now · $34.29
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG AR-15 BUFFER ASSEMBLY CMMG AR-15 BUFFER ASSEMBLY View Details
$22.29
Buy Now · $22.29
GrabAGun
GrabAGun
Last Updated:
Oct 26, 2026 07:18 AM
CMMG Carbine Reciever Extension for MK4 CMMG Carbine Reciever Extension for MK4 View Details
$35.59 $39.95
11% off
Buy Now · $35.59
GrabAGun
GritrSports
Last Updated:
Oct 26, 2026 05:40 AM
CMMG Mk4 Receiver Extension (55CA9D7) CMMG Mk4 Receiver Extension (55CA9D7) View Details
$30.99
Buy Now · $30.99
GritrSports
GritrSports
Last Updated:
Oct 26, 2026 05:40 AM
CMMG Pistol Tube Assembly (55CA67D) CMMG Pistol Tube Assembly (55CA67D) View Details
$52.85
Buy Now · $52.85
GritrSports