I have my entire "on set" inventory spot checked by ATF, police, sheriff's or BLM (don't comment until you see them in full assault gear, these are not your usual park rangers.) in CA and other states regularly. They're not screwing around, and much more than the legal costs involved with an issue, this is my livelihood at stake. The Indianapolis Ordnance guns are very clearly BFONG, meaning the "barrel" section is permanently welded to the receiver - both receiver and bolt are off sized and don't match an original, the ammunition used is proprietary, 9.3 or .46" - they are clearly marked and easy to explain to even a firearms novice, and many law enforcement are only possessing of a rudimentary firearms technical knowledge. I wouldn't let that Czech MP38 anywhere near me, or my work. In my opinion it looks too easy to convert (one piece receiver) and this is just optics, but that is all it needs to be. Caveat Emptor. Also bringing it into the US without the correct import form (or end user paperwork) could result in some issues, too. If you want an MP38 Blank firer, just spend the dollars on the Indie Ordnance set up and real parts, it will last, run like a top and you won't sweat driving it to your reenactment, or whatever it is you want it for. (I have owned and tried all the other CRAP and that's what most of it is, use my spending to save your hard earned dollars.) The blanks are reasonably priced from Atlantic Wall, I buy all mine from them, and cannot recommend them highly enough. Anyways, good luck and stay legal! Col1921a - Tor is good people, he has helped me over and over with my numerous restoration projects, and I hope he can make it back to Kentucky and finally get the business going!