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UTG Pro Mil-Spec Buffer Tube 6-Position Receiver Extension

UTG Pro Mil-Spec Buffer Tube 6-Position Receiver Extension


MSRP: $24.97


Out Of Stock

90 Day No-Hassle Returns We Pay Return Shipping

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

If you need to request a return, contact us at support@at3tactical.com 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 support@at3tactical.com. 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 support@at3tactical.com – we will do our best to make it right.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

Superior Quality Mil-Spec Buffer Tube – Unbeatable Value

The UTG Pro 6-position Mil-Spec receiver extension is precision machined from 6061 T6 aluminum forgings to true Mil-Spec dimensions. Provides a solid fit for with most aftermarket buttstocks.


  • Finish: Anodized Matte Black or FDE Cerakote
  • Material: 6061-T6 Aluminum
  • Weight 5.44 oz
  • Platform: AR-15 Carbine
  • Outer Diameter 1.15
  • Positions: 6
  • Dimensions 7.80″ L

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

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Customer Reviews

Based on 10 reviews

Fits perfect on my 300 blackout. Matches magpul fde pretty well. The only downside is that it doesn't come with mounting hardware.

Gun parts

They all came in on time and no troubles at all! Great look for a couple of my builds I have goin on and would def recommend and use them again.

Thanks for sharing your experience, Tanner. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers!

Surprised how well the color matched. Very satisfied.

Thanks for sharing your feedback, Kurt. We're so glad you're satisfied with your purchase. Cheers!

I am happy with my purchase.

Thanks for sharing your feedback, Steven. We're glad you're satisfied with your purchase. Cheers!

This is pretty dark for FDE but the quality is good

Thanks for sharing your feedback, Jason. We're glad you're satisfied with your purchase. Cheers! -AB