Great product - great price - Magpul Industries AR15/M4 BEV Block

After doing my research I realized that this tool is not the best on the market, but actually does what it is supposed to do and does it well. The alignment is perfect and as it holds the upper and the barrel precisely in place while the barrel nut is torqued to spec. My concern was that it looked plastic and not built well, but the tool is steel with a protective plastic shell and is super strong. The price is spot on for what is needed. This tool easily handles torque stress of 30-80 ft lbs but if you have a stubborn barrel nut that is stuck or over torqued you might consider a different tool.