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  1. Works perfectly
    Too small for regular tap holder, I just shimmed it in the handle, since cutting aluminium is easy.

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  2. Smaller than usual handle needed
    Tap is good and but it needs a very small holder.
    Great and easy mod to your scary black rifle.

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    Posted on

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HSS Tap for Takedown Pin Detent Retention Mod

In stock

The Takedown Pin Detent & Detent Spring can easily slip out from under the End Plate and launch across the room when installing or changing the buttstock. You can stop this from happening simply by tapping (making threads in) the hole, and installing a set screw behind the Detent Spring. The set screw will hold the detent spring in place even if the buttstock/end plate is loose or not present. This makes installing the buttstock a little easier and a piece of cake if you ever want to change the end plate.

This is the tap that will allow you to make the modification.  You'll also need a tap handle and set screws.  We sell a complete kit that has all the bits needed for this mod.

You get:

  • (1) 4-40 UNC tap made from High-Speed Steel

    Compatible with:

    • AR-15, AR-10, M16, M4 Lower Receivers

    Installation Difficulty: 

    Tools required: A vice block to hold the Lower Receiver will make the job easier. Also you'll need a 50 thou hex key to install the set screw... we'll have those in stock soon

    Installation notes: When tapping the hole, take care to keep the tap straight into the hole, and you can't go in all at once, you have to turn 1/2" turn forward, then 1/4" turn back, and repeat. This helps break up and clear the metal chips out.

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