AR-15 Buffer Retainer

The AR-15 buffer retainer is an integral part of the AR-15 rifle. This small component is designed to keep both the buffer and buffer spring in the receiver extension where they belong.

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20+ Years In Business


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Ships from Pennsylvania


The AR-15 buffer retainer, as are all of our house brand spare and replacement parts for the AR-15 platform, is a brand new part produced in a state-of-the-art manufacturing facility that holds several foreign military contracts. As such, all parts are compatible with and interchangeable in any MIL-SPEC AR-15.

Located at the rear of the lower receiver adjacent both the receiver extension and buffer, the buffer retainer is a small but vital component that extends upward out of the lower receiver and is designed to retain both the buffer and the buffer spring within the receiver extension. The buffer retainer is locked into place via the receiver extension, which should be screwed into the receiver deep enough so that it rests atop the shoulder of the buffer retainer.

Spare and replacement parts are an important consideration when it comes to firearms. Like any machine, firearms rely on a series of parts to function properly – especially those components that make up the fire controls. In general, if a part breaks or fails, a repair or replacement becomes immediately necessary – not only to keep a firearm functioning properly but also to ensure the safety of yourself and those around you.

It is also important to consider availability when discussing spare and replacement parts. At this time, is seeking to provide our customers with a wide selection of spare and replacement parts for the AR-15 platform. Several brand new parts from the house brand are now readily available on our website at an affordable price. If you have any need or desire for spare or replacement parts, now would be a good time to take advantage of this offering.

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Overall Rating
Perfect Website
Review by Daejon X.
Price is wonderful and shipping was fast.
Overall Rating
Excellent Company
Review by Marcellus O.
Delighted with this order.
Overall Rating
Rapid Processing
Review by Daniel F.
buffer retainers look excellent. Exactly what I needed.
Overall Rating
Thanks keepshooting
Review by Issaih D.
Leading AR15 buffer retainer for the buck sold by a terrific company. Thank you KS!
Overall Rating
Excellent Company
Review by Reynaldo M.
Drop In replacement buffer retainer for my AR15.
Overall Rating
Good Deal
Review by Kasim H.
Cheapest price I could find that was online. Delivery was fast with UPS.
Overall Rating
Review by Boyce Q.
Delighted with this transaction.
Overall Rating
Great Price
Review by Pilar X.
Best AR15 buffer retainer for the price sold by a terrific company. Thank you KS!
Overall Rating
Fast Processing
Review by Maximilian L.
I ordered two of these buffer retainers. Using one for repair, other is spare.
Overall Rating
Review by Johnanthony P.
Received in three days after buying. Will be back to buy at Keepshooting again!
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