The Kaw Valley Precision AR-15 Pistol Buffer Tube Kit is perfect for those who are looking to utilize a Sig-Brace, or other standard aftermarket pistol tube braces/accessories. The KVP pistol kit utilizes a standard castle nut and end plate for attachment to a lower receiver. This attachment method does away with the need for a strap wrench.Pistol caliber carbines such as 9mm, and .40 S&W, .are a blast to shoot but can be tough on AR-15's internal components. Without a properly tuned blowback system, you run the risk of being overly destructive on internal lower parts. Running a blowback AR15 with a suppressor can further increase the risk for damage. Do yourself a favor and fine tune your setup for the softest shooting PCC possible with a 7.5 oz buffer and Extra Power Spring. This kit is perfect for those who are building a PCC Blowback Pistol. Note: This tube doesn't work with the KAK Blade without modification. Includes(1) 7075-T6 Aluminum Pistol Buffer Tube Matte Black Anodized(...