BCM® KMR Barrel Nut Wrench (and M4 stock)

MSRP: $19.00
Your Price: $14.95
(You save $4.05 )
Stock Status:
This barrel nut wrench is for your KMR barrel nut. This is for hobbyist install.

This wrench also works for your M4 Lock Nut (Castle type).

1/2" drive.

Like all BCM® products, made in USA (410 Stainless Steel).
***This product contains chemicals/materials known to the State of California to cause cancer and other reproductive harm. To learn more, visit www.p65warnings.ca.gov.***

61 Reviews

  • 5
    Seems legit

    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.

  • 5
    Worked prefect

    I was able to torque down my ar-15 buffer tube with no problems and for a cheap price too.

  • 5
    Barrel nut / m4 stock wrench

    Only used the tool to install a buffer tube assembly so far it fit the notches on the nut tight and did not slip.

  • 4
    Barrel nut tool

    Works perfectly thanks

  • 5
    Works well

    Best castle nut wrench I have found. It actually fits the nuts without modifications.

  • 5
    Barrel Nut Wrench

    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.

  • 5
    Customer review

    Review body is empty

  • 5
    Awesome tool!

    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.

  • 5
    Saint Edge / Saint Victor

    This is exactly what I needed to remove the barrel nut from my Saint Edge and Saint Victor rifles! It’s super high quality and a perfect fit, plus it also works on your castle nut as well! Thanks BCM!