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LBE Unlimited Commercial Buffer Tube Kit - CBUFKIT

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You will receive fast, free shipping for all orders over $35

Shipping cost is $5.50 for orders under $35. We ship with UPS and USPS. 

Most orders ship out within 24 hours

You will receive tracking information immediately at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses.  

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you're dissatisfied with your purchase, in any way, please contact us at - we will do our best to make it right.

Product Options


The LBE Unlimited Commercial Buffer Tube Kit for the AR15 comes with a buffer tube, castle nut, lock plate, recoil buffer and recoil spring. Get all the parts you need with the CBUFKIT.


  • Commercial-spec lower receiver buffer tube extension kit
  • Aluminum construction -  Light and strong


Material: Aluminum

Finish: Matte black

Includes:  Buffer tube, castle nut, lock plate, recoil buffer and recoil spring

Not sure if you need Mil-spec or commercial buffer tube? The below image shows the difference in dimensions

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