+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

CMMG AR-15 Buffer Retainer Parts Kit 55AFFDC Color: Black, Gun Model: AR-15, Condition: New,

CMMG, Inc AR-15 Buffer Retainer Parts Kit, Black, 55AFFDC
CMMG, Inc AR-15 Buffer Retainer Parts Kit, Black, 55AFFDC
1 of 1 images
CMMG, Inc AR-15 Buffer Retainer Parts Kit, Black, 55AFFDC

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
is this carbine length? Expert Answer

This will be compatible in all AR15's that use a standard buffer system. The length of the gas system will not affect compatibility this item.

by Nick B., Gear Expert, August 31, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Solid component! by Pat, Verified Owner, July 14, 2021
CMMG makes great equipment and this small and often overlooked buffer retainer is no exception. The fit and finish are excellent and the retainer itself is sturdy and strong. This buffer retainer is my "go-to" buffer retainer kit for building out a...
Read More...
1/1 found this helpful
Most Recent Reviews
perfect parts. perfect price by ThatGunGuy, Verified Owner, June 29, 2025
Can’t ask for anything more. Great price. Does exactly what it should
Most Recent Reviews
It just works by GeneralMelon76, Verified Owner, March 30, 2025
It’s nice being able to buy the buffer retainer with the spring included, works great, super simplistic part but seems like it’s decent quality
Most Recent Reviews
CMMG buffer retainer parts by johnchip, Verified Owner, February 26, 2025
Needed to replace my buffer retainer and spring. I've used CMMG parts before and they are quality parts and priced very reasonably. Was a quick swap / install and now I have a brand new buffer retainer. I'll probably buy another for my spare parts bo...
Read More...
Most Recent Reviews
CMMG Buffer Retainer Parts by johnchip, Verified Owner, January 26, 2025
CMMG makes quality parts and I needed a new buffer retainer and spring so I purchased this parts kit. They are also good for spare parts. Definitely recommend.
Most Recent Reviews
extras don’t hurt by Tk TK, Verified Owner, December 3, 2024
Never have too many extras. If you’ve ever built or had to fix you know these can go flying!
Read All 10 Reviews
Color: Black Gun Model: AR-15 Condition: New Condition Quality: Excellent Condition Details: Other

Code: 2CM-BFA-PK15BR-55AFFDC

MPN: 55AFFDC

UPC: 815835019727

List: $3.95
$3.89

Product Info for CMMG AR-15 Buffer Retainer Parts Kit

Parts Kit, AR15, Buffer Retainerimage

Specifications for CMMG AR-15 Buffer Retainer Parts Kit:

Manufacturer: CMMG
Color: Black
Gun Model: AR-15
Condition: New
Condition Quality: Excellent
Condition Details: Other

Package Contents:

  • CMMG AR-15 Buffer Retainer Parts Kit
  • (1) CMMG buffer retainer spring. Compatible with AR-15(Mk4) and LR-308(Mk3) buffer systems.
  • (1) CMMG buffer retainer for AR-15(Mk4) and LR-308(Mk3) buffer systems.

What firearm models does the manufacturer say CMMG AR-15 Buffer Retainer Parts Kit is compatible with?

The manufacturer suggests that CMMG AR-15 Buffer Retainer Parts Kit is compatible with AR-15

CMMG AR-15 Buffer Retainer Parts Kit Orderable Models

List of Orderable Models

  • CMMG Parts Kit, AR-15, Buffer Retainer, Black, Black, 55AFFDC , MPN: 55AFFDC , UPC: 815835019727 , Code: 2CM-BFA-PK15BR-55AFFDC

CMMG AR-15 Buffer Retainer Parts Kit Unavailable & Discontinued Models

List of Unorderable Models

  • USED CMMG, Inc Parts Kit, AR-15, Buffer Retainer, Black, 55AFFDC, EDEMO1, Used, Condition Like New, Inspect and Rebox , MPN: 55AFFDC-EDEMO1 , Code: 2CM-BFA-PK15BR-55AFFDC-EDEMO-RE-A
Compare (0)
1 item has been added
Add at least two items to compare