Excellent tool,
Bottom line - use the right tool for any job. This is The Right Tool. I wish I'd found it years ago.
Professional grade
Professional tools, and pride in workmanship, yield professional results.
Best buttstock tool
Best product on the market for AR or any AR type rifles. I have used them in training and they were prefect no issues. Thank you
Robust and I will write another review
I bought this 2 years ago and today, I removed another Colt LE6920 receiver extension tube. To loosen the super-staked castle nut, no need to use a deadblow hammer (although you can use it too), I used a 1/2 " square drive breaker bar (24") this time and it was smooth as butter the castle nut came loose. Since the end plate is staked too much that it won't rotate that it contacts the thread of the buffer tube tightly. You need to pry out its bottom with something like a polymer flat head. I used one from industrial rectifier/battery flat-heat tool. Once the big detent of the end plate is lifted and clear, use a rubber hammer to strike it counter clockwise. Be careful not to lose the detent spring of rear takedown pin. Once you remove the buffer tube from lower receiver, you will USE this wrench for the castle nut to push the end plate off the buffer tube. Don't worry of scratching the buffer tube's thread, it is still deep and you can stil re-use it. This scratch would be beneath and won't be noticeable. Once the old endplate is off, use a toothbrush to clean the threads. Do the reverse of steps above to install your favourite endplate with sling mount and then torque to 40 ft-lb. It should only be done on a sturdy vise and lower clamped to it, not using lower vise block that will exert stress on the magwell when torqueing. I installed a CQD rearsling mount on mine. Good luck to your project!
Great Little Wrench!
Expensive? Yup. Worth the price? Absolutely! Over the last couple years, Ive ended up with a couple of different AR combination wrenches but have never liked how they fitted. The wrenchs prongs were small and narrow and never really allowed a solid purchase on the castle nuts. I had eyes this wrench for probably two years and reluctantly decided to purchase yet another wrench. Within a day of receiving the wrench, I had three ARs where I needed this tool. The wrench, while maybe a little short, is very solid and allows a good purchase on the castle nut, even with a Magpul ASAP mounted.
The right tool for the job
Very thick steel. This is what you want to remove those castle nut especially those that were staked by Colt. Can also be used on rifle receiver extension plus what's nice is there's a 1/2" drive for torque wrench. Not all receiver extension wrenches will have it. I really liked the 4 notches of the wrench how thick they were made really extending more on the notches of the castle nut. Get it and you'll be glad you did!
3rd time is the charm
This is my 3rd wrench. Too bad it wasn't the first. Fits both Stag and DPMS nuts. It's short, but I think that is by design. Longer might lead to over-torquing. By being short, it encourages me to use a torque wrench for leverage.
Right tool for the job!
If you really want to do the job right the first time and not risk damaging the finish to your valuable investment then this is the only product worth looking at. Yes, costs more than 2X the budget wrenches but wow, it is so super-solid you will have no qualms about using this on your firearm. The 4-tooth design locks squarely on the castle nut and make removal of a stubborn castle nut safe and easy. Could use a longer handle, but I fit a length of pipe over the end for leverage on a very tightly locked on nut and voil -- no damage to the nut or tube. Not even a mark on the castle nut where the wrench teeth fit. Glad I bought it and did it right the first time. Thanks Brownells!
Buttstock installation must
If you're building ARs, you need this wrench. Put down your crescent wrench and slip-joint pliers and use this instead.
Great Tool
We work on rifles every day, after wearing out some other tools we came across this one. Wish we would have found it earlier. Makes the job much easier. Only down side is having to take stock off but not a big dea.
