Donovan Manufacturing "SP" Buffer Tube

We wanted the best for our customers and just wasn't satisfied with what we found. We dove into the pro's and con's of buffer tubes on the market and came up with the "SPT" Buffer Tube. Specifically designed to strengthed all of the weak points on traditional buffer tubes. From the adjustment neck that runs the strengthens the full length of the tube, to a ratcheting castle nut. We eliminated all unnecessary threads and there for was able to beef up and flare out the week point in other tubes. We also rolled the rear of the tube to eliminate stress points. Another feature is our drain and weep hole systems. Allows water to escape the back of the tube as well as eliminating any air bubbles in the anodizing process.