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CMMG, Inc AR-15 Action Spring, Carbine Gun Model: AR-15, Gun Type: Carbine, 45% Off

CMMG, Inc Carbine Buffer Spring, 55CA9A2
CMMG, Inc Carbine Buffer Spring, 55CA9A2
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CMMG, Inc Carbine Buffer Spring, 55CA9A2

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Questions & Answers
Is this spring stainless steel? Expert Answer

The CMMG, Inc AR-15 Action Spring is a Mil-spec spring that meets or exceeds Mil-spec springs. It is made of Stainless Steel.

by Ethan, Gear Expert, March 30, 2022
What length of barrel is this designed to be used in? What is considered a “carbine” length? Expert Answer

Barrel length is irrelevant to the buffer system. The buffer system is mainly determined by your desired stock. Fixed stocks tend to be rifle length, while adjustable stocks tend to be carbine length.

by Kurt Colbourne, Gear Expert, February 25, 2021
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Customer Reviews
Helpful Positive Review
just one more build... by Chris Rookstool, Verified Owner, June 5, 2018
The finish on this spring is smooth and when installed in a Weapons of Mass Destruction Nickle boron receiver extension , and a touch of Lucas firearm grease, this is quiet, smooth and functions fine. Everybody who sees it loves it.
2/2 found this helpful
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Gun Model:
AR-15
Gun Type:
Carbine
Condition:
New

Code: 2CM-BUS-CMFCVR-55CA9A2

MPN: 55CA9A2

UPC: 815835013480

List: $11.00Save 46%
$5.99

Product Info for CMMG, Inc AR-15 Action Spring, Carbine

Trust this durable and reliable CMMG, Inc Carbine Buffer Spring. CMMG constructed these AR15 Buffer Springs for use with your lower receiver. The CMMG, Inc Carbine Buffer Retainer Spring delivers quiet and smooth operation for success with every shot. Get the CMMG, Inc AR15 Carbine Buffer Spring for your weapon customization needs.image

Specifications for CMMG, Inc AR-15 Action Spring, Carbine:

Manufacturer: CMMG
Gun Model: AR-15
Gun Type: Carbine
Condition: New

Package Contents:

  • CMMG, Inc AR-15 Action Spring, Carbine

CMMG, Inc AR-15 Action Spring, Carbine Orderable Models

List of Orderable Models

  • CMMG, Inc Spring, Action, Carbine, AR-15, 55CA9A2 , MPN: 55CA9A2 , UPC: 815835013480 , Code: 2CM-BUS-CMFCVR-55CA9A2

CMMG, Inc AR-15 Action Spring, Carbine Unavailable & Discontinued Models

List of Unorderable Models

  • USED, CMMG, Inc Spring, Action, Carbine, AR-15, 55CA9A2 , MPN: 55CA9A2-EDEMO , Code: 2CM-BUS-CMFCVR-55CA9A2-EDEMO-RE-A
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Last updated 2026-07-29 UTC.