Je machine tech armorers wrench - JE Machine Tech AR-15/M4/M16 Armorer's Wrench

If you're in a pinch to repair or build your AR-15, then this is the tool to buy. The blade screwdriver at one end is perfect for A2 front sights and battery covers for illuminated scopes. The spanner wrench at the same end works great for some buffer tube castle nuts and some of the newer style barrel nuts.

There's a buffer tube wrench that's a God-send for installing or removing it. There are two sizes of wrench openings which work not just for the AR-15, but its larger cousin, the .308/7.62. I've tried both and I'm thrilled I don't have to purchase yet, another wrench. It has a barrel nut wrench for most barrel nuts, and it has a wrench for the more traditional Delta ring.

All in all, it does the job. Is it the best? No. Is it the cheapest? No. Is the quality there? For the most part. My only suggestions would be 1) finish it in melonite or type III anodizing. And 2) Check tolerances for a better fit. Other than those two things, this would be a great wrench. That's why I only gave it a 4 star rating.