ACR STOCK ADAPTER 1913 RAIL HAGA DEFENSE For Sale

ACR STOCK ADAPTER

Revolutionary Roller-Locks uses an ACR stock.

It makes sense to use the ACR stock. It folds, has LOP adjustment and two-position cheek rest. All you need to do is figure out the mating hinge and adapter for the gun you want to mount it on.

Dan Haga has a number of designs for the ACR stock. He makes an adapter that replaces the buttpad/stock portion of the ACR stock and allows you to mount a Tailhook brace on the end.

ACR STOCK ADAPTER

Photo by Dan Haga

Dan Haga even designed one for use with a Strongarm brace.

In lieu of the recent news of ATF taking another look at firearms with braces, F5 MFG is coming out with an ACR brace to convert an ACR stock into a brace. F5 MFG is known for their soda can launcher. While it is not the XS Products can launcher, it is a similar product. I actually bought one last year in Vegas from Ventura Munitions while I was in town for SHOT Show 2019.

The ACR stock has become a rather popular stock alternative for various firearms. One of the earliest uses I can recall is KDG AND THEIR ACR STOCK WITH AN ADAPTER FOR THE SCAR PLATFORM. Other companies have used the ACR stock on their guns as well.

ACR STOCK ADAPTER

Photo by Dan Haga. Tailhook modified ACR stock

Photo by Dan Haga

The problem with the Dan Haga designed options is that it requires a third party brace. Well now F5 MFG is skipping the middle man and made their own ACR brace for their MSS (Modular Stock System).

Photo by Dan Haga

Photo by F5 MFG

 

You can also order a complete brace setup for $399. F5 makes four versions of their ACR Brace for MP5, CZ Scorpion, B&T APC9, as well as the Grand Power Stribog.

The Revolutionary Roller Locks MP5K ACR adapter is designed for mounting an ACR stock or brace on the HK MP5K series of firearms. Installation of the ACR stock dramatically improves user capability by providing a folding, height adjustable and length-of-pull adjustable alternative to traditional options. This setup is ideal for shooters and professionals who desire a positive cheek weld while using modern optics on their reliable platform.

This part is manufactured from Nylon using a process called Multi Jet Fusion or MJF. The parts are then dyed and shotpeened for a strength and finish that is comparable to injection molded nylon. The part is black throughout.

Installs the same as the factory backplate using existing hardware. Comes with Choate buffer already installed so you can get to the range.

*NOTE: This adapter will work on the HK SP5K and now requires no modification.

NEW! Gen 3 ACR adapters for the Scorpion now include an interface to mount the factory ACR sling bracket should you choose to use it (bracket not included unless you order the ACR stock assembly from Haga Defense as well. Otherwise it can be transferred from your old ACR Stock hinge). Other improvements include revised hinge geometry for easier operation when folding and locking closed.

Adpatper for mounting the Magpul ACR™ stock on your CZ Scorpion.

This adapter will allow full use/function of an ACR™ stock or ACR™ Tailhook brace. The ACR™ stock or ACR™ Tailhook brace will be able to fold and lock while folded. Shell ejection will be un interupted while folded.

Machined from 6061 aluminum and hardcoat anodized black (Mil-A-8625 Type III Class 2).

Installation: You will need a 3/16″ roll pin punch and a hammer to remove the ACR™ stock’s factory adapter and replace it with this one. Once swapped the assembly can be installed on your Scorpion the same way the factory stock is installed/removed.

Scorpion Adapter Fit:

I have found that there may be some slight variation in fit from Scorpion to Scorpion. No matter what the reason there are some pretty simple fixes for a slightly tight or loose fit.

If you have a slight wobble it can be easily solved by placing a small piece of electrical tape as shown in the image below. This will make it nice and tight.