AR-15 Mini Milspec Buffer Tube Kit- Pistol Caliber Carbine

$49.95 - $69.95
(1 review)
Current Stock:

The AR-15 Mini Milspec Buffer Tube Kit is tailored for enthusiasts aiming to compact their AR-15 setup without compromising the firearm's reliability. This kit adapts our pioneering AR-15 CQC system into a more condensed form, offering a reduced buffer system length that still supports a Milspec Bolt Carrier Group (BCG). By reducing the M4 stock size from over 6.5" to 5" and featuring a Mini Buffer Tube that extends only 5.25" from the receiver's end when installed, this system ensures your AR-15 is as streamlined as possible while fully operational.

  • Compatible with 9mm, 40s&w, and Similar 
  • Proprietary Mini 5 Position Buffer Tube extends only 5.25" from the rear of the receiver. Buffer will accept Milspec parts and stocks.
  • 7075 Impact Extrusion, Hard coat anodized
  • Flatwire buffer spring for increased reliability and longer life
  • Proprietary mini buffer weighs only 3.7oz- Carbine/ 4.6oz- Heavy, and 5.5oz- H2, performs like a standard length carbine buffer in combination with our flatwire buffer spring
  • Mil-spec end plate
  • Mil-spec castle nut

For those assembling or upgrading their pistol caliber carbines, exploring related components can further enhance your firearm's performance. Consider our selection of AR-15 Bolt Carrier Groups for a seamless match with this buffer system. Additionally, our AR-15 Stocks and Buffer Tubes category offers a variety of options to customize your setup according to your specific needs. And for a complete build, don't forget to check out our Pistol Caliber Parts, where you can find all necessary components tailored for pistol caliber AR builds.

This kit includes the buffer tube, buffer, buffer spring, end plate, and castle nut, providing a comprehensive solution for those looking to make their AR-15 as compact as possible while ensuring operational reliability.


  • 5
    Great Tube for PDW's

    Posted by Tim on November 21, 2023

    If you're looking at keeping your PDW as short as possible, especially without taking out a second mortgage, then this is the Way. Great, affordable way to trim some length off your build without impacting function. Price is extremely reasonable too when you take a look at other similar options.