B.A.R.T- 2.0 is a two in one tool. Inserted into the front end, the tool laps the face of your AR Uppers, ensuring a perfectly square and centered fit between your Barrel and Upper.
With the head of the tool secured in vise, insert the other (splined) end through the rear of the upper until the splines engage the lugs of the barrel. You are now ready to loosen or tighten the barrel nut, muzzle brake, or suppressors and install gas blocks with ease and confidence without any need to remove sights or optics.
There is NO OTHER tool on the market like it. This one tool does the job of TWO TOOLS, literally saving you $100 or more! If you build or own AR’s this tool is absolutely indispensable.