California Compliance Kit

(3 reviews) Write a Review
0.20 LBS
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JL Billet Internal CA Magazine Lock Upgrade

Cali-Compliant Kit Includes:

  • Mag catch

  • Locking pin

  • Set screw

  • Spring


This kit is only for JL Billet receivers manufactured with a vertical threaded hole above the magazine catch on the left side of the lower. This product is not intended or compatible for JL ECO AR15 80% Lowers

See video for installation details.


3 Reviews

  • 5
    It works very well

    Posted by Todd Miller on 1st Jul 2022

    It's a very clean and easy install if you have a metrology room and a machine shop. I have it paired with Juggernaut Tach. hellfighter takedown pin. I get my bolt release button back, and the bolt locks back on an empty mag. This is a great product.

  • 5
    Perfect CA compliant attachment

    Posted by Unknown on 9th Oct 2020

    Purchased the Hellfighter from Juggernaut Tactical and made me get rid of my Geissele bolt release for their mag lock so this product allowed me to have my bolt catch back!! works like a charm

  • 5
    best replacement part

    Posted by Tosh on 10th Apr 2018

    I have multiple magazine lock options but JL Billet has a better finish than all the rest. The fit is much more secure than the others too. The turnaround time was just 4 days! I will be purchasing more JL Billet products in the future.