Worked fine - once fitted
Used this on an Aero Precision M-Lock handguard barrel nut, the pins were slightly off. I had to file them to get them to line up with the holes, then it worked perfectly.
May require modification
Just like two other reviewers, I purchased this tool to install an Aero Precision BAR barrel nut. The pin pattern diameter of the tool was too large for this application, and I had to do a good bit of filing on all three pins to remove enough material for it to match the hole pattern in the nut. With modification, it fit perfectly and remained sufficiently robust to apply 60 ft-lbs of torque to the barrel nut. There aren't many choices out there for installing a BAR nut, but this tool works fine if you have the patience to make it fit.
excellent for most small nut application
this wrench works great with standard barrel nuts. The interior dimensions do not allow its use to install the JP enterprises barrel nut on the jphg-1d, however, due to smaller radius of the space designed to fit around barrel. I had to buy the DPMS model to use with this handguard's barrel nut. Still, I use it and abuse it in every other application and it is strong and easy to use. It is the strength of the design that makes the inside radius small.
Does the job
Remember that this a reproduction of a military/factory wrench. I think this item is getting a bad rap since the reviews are for applications that are not using mil-spec or factory add ons. It definitely gets the job done with the mil-spec parts.
Very Strong and Proper Fit, But...
I used this tool to remove the factory barrel nut on a standard M-4 platform AR. I had some difficulty with the nut because it was on the rifle through many heat cycles. Some of the prongs actually broke off the nut before I got it loose, but the prongs on the wrench stayed in tact. I could see, however, where some applications would call for the prongs to be longer. This tool worked great for me on this project, but others may have to consider something different.
