Huben GK1 Grip Adapter

(4 customer reviews)


Huben GK1 AR Grip/Stock Adapter

  • Made in Texas, USA. Fused PA12 Nylon Construction. LIFETIME WARRANTY
  • Accepts AR Grips with and without beavertails.
  • Accepts 1913 Picatinny Clamping Buttstocks, Braces, Adapters, etc.
  • Works well with our Poor Man’s Side Folder.
  • Allows access to trigger adjustments and power adjustment screws.
  • Choose from v1 or v3. Make sure to check your model first.
  • FREE SHIPPING within the USA. Ships same or next business day via USPS.


The Huben GK1 might just be the Holy Grail of PCP Pistols. Sleek minimalistic form factor yet very powerful and semi-auto. None of these things are new in and of themselves, but all three in a PCP pistol is certainly unique. I’ve put a lot of thought into the design of these parts. They are sleek, thoughtfully designed, and add an imperial ton of utility and fun to this platform. These are priced well because I’ve worked hard at keeping the cost low without compromising quality. I’ve partnered with another Texas-based manufacturer to have these made in super tough MJF PA12 Nylon with a bead blasted matte-black finish.

The grip adapter makes it so that you can make use of the many AR grips on the market. It will come with a grip. Choose from a few of our favorite options. I highly recommend the MOE-K grip. The small grip and reduced rake pair perfectly with a carbine configuration.

This adapter includes a rear pic for mounting a stock. There is a little room to move the stock up and down to get the cheek comb where you need it. It works great with a SIG, Midwest Industries, or JMAC skeletonized folding stock. It also works well with our Poor Man’s Side Folder. You can mount any stock, brace, or stock adapter that is made to mount on a rear facing 1913 picatinny rail.


I do not show it in this video below, but you will need to insert the small M3 nut (4. in the pic below) into the hex hole in the grip adapter opposite the grip rib.

The other hardware included in this kit: 1.) M5 Star Washer, optional – install under the head of 2.) M5X16 Grip Screw for A2 Grip or M5X18 Grip Screw for Magpul Grip 3.) M5 square nut 4.) M3 nut  5.) M3x12 socket head cap screw – for securing the AR grip rib to the grip adapter. 6.) M5X18 socket head cap screw – for securing grip adapter to the GK1 frame. This screw will be angled for the v3.

Installation will require a punch small enough to punch out the 2.5mm trigger pin and a 4mm, 3mm, and 2.5 hex driver. Please watch the install video before purchasing. I have been told that some models will need the trigger punched out from the left side. Mine had to be punched out from the right side. Figure out which side has the knurling and knock it out from the opposite side.

Installation for the v3 is very similar, with only two small differences. You need to angle the grip screw to get it to engage the barrel nut and you’ll need to transfer over the set screw for the power adjuster. I’ll add an installation video here soon. If you’re not comfortable with trying to figure it out just wait until I have the video listed.

Additional information

Weight N/A
Dimensions N/A
Grip Option

Magpul MOE K2 Grip – Black, Magpul MOE K2 Grip – FDE, Magpul MOE K2-XL Grip – Black, Magpul MOE K2-XL Grip – FDE, Magpul MOE-K Grip – Black, Magpul MOE-K Grip – FDE, Milspec A2 Grip – Black, Milspec A2 Grip – FDE


v1, v3

4 reviews for Huben GK1 Grip Adapter

  1. Michael PurdyVerified Owner
    Great product and great customer service!
    This adapter and the magpul moe k make the GK1 look soooo much better! The quality is like something you’d get from a factory!
    Huben GK1 Grip Adapter photo review
    Huben GK1 Grip Adapter photo review
    Huben GK1 Grip Adapter photo review
    LJVerified Owner
    Perfect fit
    Perfect fit, smart product, great quality!
    John PhillipsVerified Owner
    Love New Grio
    Quality material perfect fitment
    David LeasVerified Owner
    I am very happy with this mount and it was pretty easy to install
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