This wrench also works for your M4 Lock Nut (Castle type).
Like all BCM® products, made in USA (410 Stainless Steel).
Haven't had to use it yet. Picked it up because it was a great deal on clearance. I'm sure it will satisfy my needs.
I was able to torque down my ar-15 buffer tube with no problems and for a cheap price too.
Only used the tool to install a buffer tube assembly so far it fit the notches on the nut tight and did not slip.
Works perfectly thanks
Best castle nut wrench I have found. It actually fits the nuts without modifications.
I needed a barrel nut wrench to remove the 5.56 barrel from a Springfield Saint in order to install a 9MM barrel for some 9MM suppressor testing, your barrel nut wrench worked perfectly for what I needed it to do.
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This is exactly what I was looking for. My multi tool slips and damages the castle nut but this tool fits perfectly without slipping and damaging the nut. It also doesn’t cost as much as a lot of the highly recommended other tools. Perfect for the DIY person that only plans on doing a couple guns.
High quality tool like anything else from here...