Magpul® B.A.D. Lever® - Battery Assist Device – AR15/M4

(54 reviews)
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Magpul B.A.D. Lever

Want to cut a half second off of your bolt-lock reload time on an AR15/M4? Install a Magpul B.A.D. Lever. and you're half way there. Whether you love it or you're on the fence, no one will deny the Magpul Battery Assist Device (B.A.D.) will significantly decrease your bolt-lock reload times.

Want to cut your double-feed clearance times in half? Installing the Magpul B.A.D. Lever allows you to keep your hand on your firing grip while locking the bolt back to clear your malfunction. On top of that, you can now administratively unload and lock your AR15/M4 action open with ease- simply drop your magazine, then press upwards on the B.A.D. as you manipulate the charging handle to the rear with your support hand. Look and feel, then Presto Bango- you're cleared.

Billet machined and Type III hard anodized, the Magpul B.A.D. Lever is easily installed via a Nyloc treated Torx screw.


  • Fits standard mil-spec forged AR15/M16 lower receivers
  • Thin, anti-snag profile and textured surface still allows for traditional manipulation of the bolt catch while maintaining unobstructed access to the trigger
  • Easy attachment to the existing bolt catch paddle via one screw
  • Machined from durable billet 6061-T6 aluminum with mil-spec finishing
  • MIL-A-8625F, Type III, Class 2 hard anodizing with manganese phosphate on the screw per MIL-DTL-16232G
  • Torx® mounting screw with Nyloc® blue patch prevents back out under recoil
  • Torx® wrench included
Made in USA!


  • 5

    Posted by Ed on 20th Jun 2022

    Great product if you own an AR I would highly recommend the B.A.D Lever will not regret it.

  • 4
    Battery Assist Device

    Posted by Gary Davis on 10th May 2021

    It works. 1st screw stripped while tightening. Replaced screw. The part that covers bolt release is loose but secured. Easy install.

  • 5

    Posted by Zulu on 4th Jun 2020

    If you own an AR platform and don’t have this, you’re missing out!

  • 5
    BAD lever

    Posted by Josh Dixon on 13th Apr 2020

    Great product, stellar service. This company is the fuckin cat's meow.

  • 5
    B.A.D. Lever

    Posted by Thomas C on 31st Aug 2016

    With so much extraneous bolt on gear for rifles, I was leery about using this on my rifles. This was my third lever. It is that good, it allows a much simpler manual of arms. On the rifle this third one went on I ran several times at the range without first. I am so used to having the lever it was strange. Even though my training from the Army starts to take over, using the lever is now a habit. It is so much simpler.

  • 5
    Quality product

    Posted by Chris J on 29th Dec 2015

    Good product, does a great job for one handed operation. Buy one you'll love it.

  • 4

    Posted by Hiram Naumu III on 3rd Apr 2015

    The BAD Lever will fit with a normal upper stander size. My upper is not a stander size so I can't use it with my upper that I have now. I'll use it on my next AR build. It's a real good product.

  • 5
    Added value

    Posted by Caleb Bennett on 19th Feb 2015

    Awesome little add on, will take some getting used to it.

  • 4
    Works great, but...

    Posted by E on 28th Sep 2014

    Works flawlessly, however, still undecided if I want to use it. I really like Magpul products and the BAD lever works without issues. Just not sure I want to keep it on or go traditional.