For those that are not familiar with The Tenko 10-16, a little background. Ten years ago, I had the idea of making an "upper" that would use the mechanism of an AK in the receiver of a roller delayed. The following year I bought an M10 from Tom (VegasSMG). Instead of using a HK sear/trigger pack, why not use the M10 as the registered machinegun part? But the engineering and fabrication was beyond my abilities. In June of of 2017, I met up with an Engineer that could help me. We made a 3D printed version of the Tenko adapter, which allows the use of standard AR-15/16 uppers to be fired from a M10, that was custom fitted to my RPB double stamp receiver. In December we received a determination letter that the Tenko adapter was considered a firearm accessory.
In October 2018, we sent in a billet aluminum version and had three Beta testers put 10,000 rounds through three units. We found one small flaw and fixed it. In February 2019 we hear back from the ATF that they had changed their policy, they would ship back the adapter without determination, and we would need to resubmit as a complete firearm. I sent my original RPB M10 with one of the Beta units.
After six months (the original submission was 108 days), I tried contacting them as the confirmation letter they received the complete firearm said that I could expect the determination in six months. No response. Several RKIs suggested that we become a FFL holder, which we did. Still no response. I contacted a NFA specific lawyer and my senior Senator's office. I finally got a ATF response. They held the adapter in a vice bolted to a table, Used a C-clamp to hold a piece of angle iron to keep the recoil spring inside the adapter. They basically made the channel of a M10 and got it to fire. So the determination was that the aluminum adapter was a machinegun. The lawyer asked why the two different determinations for the same product only in a different material? The ATF said they didn't fire the plastic version because they were afraid to. The lawyer told me that he would need $100,000 retainer and two years for appeals. It would come down to whether the judge agreed with the ATF. He said that most judges would tend to go with the ATF determination. He said that our odds weren't good.
I am now 64. The money we will have in this is basically half of my net worth. Another manufacturer submitted their AR based upper a couple of months after we did. They got approval after two years and four months. I think we have a pretty good chance to get approval. Anything mechanical can be overcome, but our current design would be very hard to overcome. But that is up to the ATF. I don't have $100,000 dollars to fight them. I agree what they have done is BS, but I just don't have the resources to take them on in court.
I need to square up with my engineer and overnight ship and overnight return ship to M10s with two adapters and uppers. We will be submitting a closed bolt and an open bolt version. I need to come up with around $12,000 by the end of the year. I will sell whatever I need to to come up with the cash. This whole experience has really taken the fun out of shooting. So resubmit and patiently wait. Thank you all for your kind words and support. It means a lot.
Scott
Manager A&S Conversions, L.L.C.