AR-15 - F.N.G.R. Fixed Magazine Kit

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(84 reviews) Write a Review


With MagLatch is installed and used properly your firearm is no longer deemed an "assault weapon" in restrictive states. Our kit installs as easy as the mil-spec magazine release because it is exactly that. We've taken mil-spec parts and modified them rather then redesigning a nearly perfect platform. That means no funny arms, milling, or drilling your lower. When utilized properly our compliant device converts your firearm to fixed magazine bypassing assault weapon registration requirements. When used properly the F.N.G.R. conforms to all requirements of SB 880/AB 1135 and NY Safe Act. Most restrictive states follow the same requirements but be sure to check with your local authority before installing our device.

Use of a M3 PMAG 10 round magazine is recommended in conjunction of our fixed magazine device.

Regardless of type, fitting of the F.N.G.R. shim may be required due to variations to the recess of the magazine well.


  • IN A BAN STATE: Insert magazine of 10 rounds or less. Insert F.N.G.R. shim.
  • IN A FREE STATE: Disassemble Upper and lower. Remove F.N.G.R. shim. Use rifle as intended where legal to do so.


An ejection port loader such as the Bear Flag Defense BF-10 is recommended for fastest reloads.

Kit includes:

  • MagLatch Modified Magazine Catch
  • F.N.G.R. (Type 0, 0F, 1, 2)
  • Magazine Catch Spring
  • Magazine Release Button
  • Set Screw
  • Allen Key
  • Installation Instructions

Don't forget your backup F.N.G.R.'s!

After overwhelming requests to solve the ever growing problem of forgotten magazines, Andrew Bobro of Bobro Engineering, designed the F.N.G.R. to prevent misplacement of your magazine. F.N.G.R. was originally designed to retain your firearm's magazine in the confines of your lower receiver to prevent loss or theft.

Patent Pending

MagLatch devices have not been approved by the DOJ. This device was designed to conform to the law as written in SB-880/AB 1135, which defines “fixed magazine” to mean an ammunition feeding device contained in, or permanently attached to, a firearm in such a manner that the device cannot be removed without disassembly of the firearm action. Thousands of units have been installed and tested under the law. Multiple authorities have authorized use of our device. Since DOJ refuses to release an opinion letter we are unable to claim it is DOJ approved.


84 Reviews

  • 5
    5 Stars

    Published by Unknown on Dec 19th 2022

    I’m giving this product a 5 star rating because it’s the best compliance product on the market hands down. Works as advertised. I wish they included a Type 1 finger but that’s my only complaint. Amazing product!

  • 5
    Give'em the FNGR!!

    Published by JorgeR on Dec 12th 2022

    what a genius idea! never again will i lose a mag at the range. installs in two minutes

  • 5
    everything about it was great

    Published by 10xjJoe on Dec 7th 2022

    easy to ass. and use

  • 5
    FNGR kit

    Published by June manansala on Dec 5th 2022

    All i can say is one of the best CA compliant tools for ar 15 platform and easy to install 10 seconds.

  • 5
    Fngr mag latch

    Published by Howard kaiser on Oct 31st 2022

    One of the best products I’ve seen for fixing a magazine in your rifle. Very easy to install and literally can be done in minutes if even that long

  • 5

    Published by Matt Abellaneda on Oct 11th 2022

    Works amazing. Works just like advertised. Easy install. Love that they give you an extra FNGR. You HAVE to use m3 mag not m2 mag!! I made that mistake

  • 5
    FNGR Maglatch

    Published by Luis on Oct 11th 2022

    Device works great, but specific to the magazines you use. Website recommends Gen3 Pmags but for some reason my Gen2 Pmags were a tiny bit thinner. I sanded on my mags about in the inch space above the magazine catch slot on the magazines so that the metal blocker can slide more freely

  • 5

    Published by Doug Mathews on Oct 6th 2022

    Easy to install keeps my rifle in compliance with California regulations

  • 5
    Best Fixed Mag Solution

    Published by Ethan on Sep 6th 2022

    This is the most unobtrusive, easy to install fixed magazine solutions for Californians; my friends and I run it on all our AR's because it is so simple to use.

  • 5

    Published by Ed Tatelbaum on Aug 2nd 2022

    Easy install (3minutes) once I finally got my fixed mag latch removed. Simple operation.

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