AR-15 Carbine Buffer Tube

The AR-15 Carbine Buffer Tube is sometimes known as the receiver extension tube. This carbine buffer tube is what you need to install a carbine length collapsible stock onto your AR-15 style rifle.

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Ships from Pennsylvania


The AR-15 receiver extension, also known as a buffer tube, is a mil-spec buffer tube manufactured in America. Most experienced AR15 shooters replace their commercial buffer tubes with mil-spec buffer tubes for a better lockup on their collapsible stocks.

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Overall Rating
Review by Khari Z.
Received in four days after placing my order. Will be back to shop from KS again.
Overall Rating
Review by Ulysee W.
Delighted with this purchase.
Overall Rating
Top-Notch Spare Part A++
Review by Payton H.
I bought two of these carbine buffer tubes. Used one for repair, other is stored in my spares box.
Overall Rating
Just as pictured.
Review by Holt M.
Would Recommend this AR15 carbine buffer tube
Overall Rating
Review by Errick K.
Finest AR15 carbine buffer tube for the price sold by a awesome company. Thank you KEEPSHOOTING!
Overall Rating
Fast Delivery
Review by Epifanio F.
Leading AR15 carbine buffer tube for the price shipped by a terrific company. Thank you keepshooting!
Overall Rating
Great for my use
Review by Amanuel F.
Parts look perfect. Exactly what I wanted.
Overall Rating
Just as described.
Review by Moussa G.
Satisfied with this order.
Overall Rating
Review by Nazareth G.
Perfect replacement carbine buffer tube for my AR15.
Overall Rating
Quick Shipping
Review by Dominque X.
Cost is excellent and shipping was fast.
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