NFA modification open letter to Congress
NFA mod PDF version
HK 91, HK 93, HK 94, MP5K, 80% receiver jig for full auto
NFA control over machineguns is almost over? Thank United States vs. Morgan and subscribe to this gentleman to help support his excellent work.
Once that law changes, I WILL PROBABLY NOT BE ABLE TO KEEP UP WITH DEMAND.
This complete HK jig assembly is designed specifically for the flats sold by others for new builds only. This unit accurately locates all of the drilling holes as well including the select-fire trigger pack hole typically used by Class II manufacturers. The entire process for which my jig is designed may be easily done with only a drill press. If you can weld, you are no longer dependent on other manufacturers (and their grossly inflated pricings) for owning or making one of these fine rifles.
DO NOT PURCHASE THIS UNIT IF YOU ARE STARTING WITH A FINISHED SEMI RECEIVER-THERE IS ANOTHER UNIT LISTED SPECIFICALLY FOR YOUR STARTING WITH SEMI RIFLES. It is also less in price since there are fewer expensive bushings needed.
As is evident from the photos included here, considerably more time was spent in the design and manufacture of these jigs as well as creating the very detailed jig usage instructions with color 3D CAD drawings with regards to the rest of my jig product line. This jig works with all 90 series rifles in the HK line (9mm, 5.56, and 7.62). A spacer is provided for the shorter chassis of the 9mm and 5.56.
Hardened steel drilling bushings have been inserted into the sideplates for the rear stock hole(s), the select-fire trigger group holes, as well as the magazine release button holes for long-term reuse (patent pending). I have found on a few flats that both the stock holes as well as the magazine release holes missing on the stampings-which is very disappointing. That is no longer an issue.
An innovative approach was done to keep this jig totally captive during the drilling process. A bolt-clamping insert was designed to keep the jig drawn up tight against the receiver bottom (see the video below for easier conceptualization). Forward and rearward facing planes contained in this jig prevent any movement either front or back. The combination of these ‘limits’ completely prevent movement in any direction.
The quality of all aspects of these kits will give the utmost confidence for the completion of your receiver. Take the time to notice all of the details including the extrusions on the parts themselves in each of these photos. Further details are on the YouTube video above.
Jig/template assemblies and supporting parts of the jigs in the photos are included, however (trigger groups or trigger boxes and/or trigger pack assemblies, firearms, receivers, parts, tools, milling bits, and/or drill bits are not included).
If in doubt about the quality of my entire jig lineup, read this Reddit link about the AK PRO (click here)
This fixture may be lawfully owned by anyone, but all NFA rules apply regarding the use of some of the features incorporated into this product. You (the purchaser) are solely responsible for how this item is used and I (the seller) shall not be held accountable for any misuse of these drilling jigs by you (the purchaser).
Currently I also have a complete 80% AR jig/assembly system, an AR conversion jig, an 80% AR receiver tester, as well as an AK-47/74 Class II jig for the 80% pre-bent and heat treated receivers, an AK scope mount template, an H&K flat template, a semi to select fire jig for existing HK rifles, and a semi to select-fire conversion jig for the SEF trigger pack which does not corrupt a semi auto receiver, a Class II AK-47/74 / Galil conversion jig for semi to full conversion, a Galil 80% jig, a locked slide conversion (for suppressor use) for the GSG 1911-22 and a Ruger 10-22 80% jig (also with locked bolt drill-in locator) on-line now.
This jig is ready to ship on the following business day after receipt of funds. My products are made in America, by Americans, for Americans.
Shipping is included.
Keep in mind that I am an 07 FFL with a Class II SOT (suppressor and machinegun manufacturer) and essentially all other internet vendors of items similar in function/use to my kits are neither licensed FFL’s nor SOT’s.
A shout out to the (4) companies renting autos (made using my AK, AR, and HK-SEF conversion jigs) on the firing line at O.F.A.S.T.S. last summer. I appreciate all of the accolades, but I sort of wished that you would have stayed at my table a little longer, giving the all-important satisfied customer speeches to all of the passersby.
Also a big thank you to Mike @ O.F.A.S.T.S. for getting me those cut IMI Galil pieces that I used to design my new Galil jig.
To see videos showing the rest of my product line, click the link below.
DUE TO THE NATURE OF THIS PRODUCT, THERE WILL BE NO RETURNS FOR REFUND OR TRADE.
To see more jig videos, click the link below:
To see more machinegun videos, click the link below:
Thunderstruck machinegun rental promo
Click photo to play

There are also a lot of eye candy in my wallpaper section, click the photo below to see them all:
Sales outside of the United States have to be transacted via telephone with credit card information exchanged. Extra shipping and insurance fees as well as paperwork filings are involved.
After purchasing my jig, your credit card statement will show the following as the vendor:
ESP or EXTRA SENSORY PROTECTION 913-341-8564 KS