I hold in my hand

A 19.75 inch 9mm uzi barrel. and I don't even own an uzi.

what is it for then? you might ask. it is for a 9mm carbine I have designed. I hope it will be done in a few weeks. lots of time on the mill, drill, and lathe in a friends shop and I should have a first rate carbine. it will take uzi mags and an uzi barrel, other than that and the picatinny rail (and springs) it will completely be designed and fabricated by me.

not to worry all you people that are going to freak out about the leagal ramifications, I have thoroghly checked and rechecked regulations and it will be completly compliant.

its really cool to see my first gun start to come into being. I have the metal for the reciever and trigger, I have tha barrel, I have the complete design, and I have a place to put it all together. I AM SO STOKED!!!

hopefully it will get an EOTech and such treatment eventually but that will be in the future.

pictures and range report to come when I get it all done.

it is long, but thats how it came. yhe first order of business will be to cut and recrown it at a completely legal 16.00000001 inches (ok ok, closer to 16.5). that will leave me enough to buld one of my pistol designs. I have a large collection of original designs that I can't wait to finnish but this is just kindof a proof-of-concept. I am a poor engineering student that loves guns. so what would any poor engineering student with any self respect and no budget for guns do? he would design and build his own, well thats what I am trying to do anyways. it also helps that I have wanted to be in the gun industry since I was 15 and have been designing guns since that time.

oh yeah, I want to have it ready and sighted in by the time we have the next THR shoot in PA.


ps. this means lots of surplus 9mm (cheap) and lots of people can shoot my toy. this is all asuming that it works.

ok, lets see

I would like to patent the final design some day so I can't really get too specific but I'll see if I can give you the general idea.

it will be gas operated (you'll see )
with uzi mags at about -75 degrees from the barrel (kinda HK ump ish)
I haven't decided on a stock design as of yet
picatinny rail on top, hopefully set to coordinate with the irons
ambi cocking design

its really hard to explain, I'll get a pic of the outer stock and reciever design up tomorrow hopefully. that will give you a general idea

guess what!! its been months since I wanted to have this thing done. but I'm finally making progress, thank God. I have a rendering that I'm going to try to post. it looks pretty darn cool. the shop that I was going to use didn't work out so I was stuck with my barrel and metal stock but no where to work it. so now it looks like I may have access to a some machinery. i'm getting excited, but not too excited because it still will probably be a while yet

by law you are allowed to manufacture any firearm for yourself as long as you don't sell it and it conforms to current laws.

ie. the barrel on my carbine will be about 16.5 inches, fed minimum is 16.
the OAL on my carbine will be just over 30 inches, fed min is 26.
the mags will still be usable in the original firarm, thus I am not manufacturing new hi-caps.
and most obviously, it is not full auto.


so everything is completly legal. as I already stated.

update

well I did a little refinement to my design and ended up shrinking the reciever a little, not a bad thing. and in honor of the ban expiration I even gave it a folding stock. I don't think its as pretty as the first version but its lighter and smaller dimensionally

CC, I did all the engineering myself. the way the piston cycles the action is, as far as I know, completly new. the only donor parts are the barrel and mags from an uzi. I am still debating whether or not to wind the springs myself.

yes i do want to make a pistol version. but what I really want to do is make a version in 45 acp. and maybe on in 40 cal. there is a slightly different carbine in the planning stages in 500 S&W, just because I think it would be cool as heck. I might rechamber an uzi 9mm barrel in 357 sig. but those versions are all in the future. I have a design pic of the pistol version


as for a bayo lug, naw. I'm just gonna thread the muzzle and do the paperwork for a suppressor eventually. that'll tick em off sufficiently.


made quite a bit of progress in the machining part of it yesterday. now I have allot of drilling and tapping to do today, talk about a boring part. but at least it will start to look like something now.

hers the pistol version

well corncob. the truth is I did minimal math and designed my way around as much of the problems as possible. thats why this is a concept or proto. the fact is I need the piston to move a given distance. I know the general pressure of a 9mm round at 6 inches down the barrel. all I need to do is drill a gas port in the barrel, connect the gas supply to the cylinder/piston and make sure I have a way to regulate the amount of pressure in the gas system. it may not be the most genius way to build a gas system but it is simple and in theory it should be rugedly functional

I cal this project my POC project, for Proof Of Concept. I have an idea that I think is a real good one but I need to prove it. 9mm barrels are cheap (about 20 bucks from cdnn). 9mm ammo is cheap. and if the breach locking system fails and goes KB its not gonna leave a hole in the ground the size of new jersey. the truth is I could go into the shop today and build an open bolt (or closed bolt) gun in a couple of hours. but that wouldn't get me any closer to figuring out if I have a good idea or not.

good point about the GS. I took that into consideration. the gas block is manchined out of solid cold roled steel, heat treated. the plan for testing was to tie a string to the trigger, set the gun up on a rest and move far away to pull the trigger. I was going to start with the port closed and then SLOWLY open it. I am regulating the gas with a hole drilled and tapped perpendicular to the gas port with a large set screw threaded into the hole then a second set screw threaded in over it in order to lock it in place.