It wouldnвЂ™t be hard to search around and find some pretty good piles of it. Granted, this is getting into CafГ© territory, but thatвЂ™s not true unless everyone uses the ammo. Note that the booklet is for informational purposes only, and that it is illegal to actually do the conversion. Why go to the trouble of converting, when you can just pick one up from a dead guy? Imagine how hard it would be to find when every living person is trying to stock up.ДЄnother thing is this: If you really need a fully automatic firearm after the collapse of civilisation, it probably wonвЂ™t be that hard to just find one. Ammunition disappears from store shelves whenever there is a hint of more government regulation. In an actual zombie apocalypse, theyвЂ™re going to run out of ammo mighty quick. People are always blasting away on full-auto for no rational reason (other than audiences like it). This is a pet peeve of mine when I watch shows like The Walking Dead. Of course in case of the collapse of civilisation, youвЂ™re probably not concerned about federal laws.ДЄnd your friend sounds like a yahoo a full-auto machine pistol is good for quickly clearing a room or other confined space, period. The ads said that you need a Class III permit to buy them. Last time I was casually browsing gun parts (I still have a вЂretro-M16вЂ™ semi-auto project IвЂ™m building вЂ“ waiting for the proper upper receiver) I noticed people selling full-auto parts.

You canвЂ™t even make a drop-in auto sear since (I think) the late-'80s, as it is considered a вЂmachine gunвЂ™ in itself. A drop-in auto sear you can probably make with a hunk of metal and a file (plus a spring and a pin). IANA machinist, but machining the receiver doesnвЂ™t look very difficult. There are two ways around this: Machine the area inside of the lower receiver to match M-16 specs and drill a hole for the pin or make a drop-in auto sear. The M-16 automatic sear will not fit in an AR-15. You also need an automatic sear, or else your hammer will follow the bolt carrier and you may detonate the cartridge before the bolt is locked. These are the hammer, trigger, disconnecter, selector, and bolt carrier. They directly replace the semi-auto parts. The AR-15 is very easy to convert if you have access to M-16 parts. Dunno for the MAC-10, but many such as the AR-15 are definitely manufactured now so youвЂ™d need a whole replacement receiver.

Mac 10 9mm open bolt