FA Semi-bolt

[birdland101]

What would happen if I took FA lower and attached it to my SA IMI model A and pulled the trigger in the select fire mode?? This is with the SA bolt etc. in the gun and 16 inch barrel.:angel3

[Bob T]

It would fire one shot and then jam/malfunction trying to feed the next round.

Plus a normal FA lower uses an 8mm pin to attach, the SA lower uses a 9mm pin so unless you open the hole in the FA lower it won't fit.

[KarlPMann]

:welcome birdland101. He's right, you'd just get a jam if you were using a standard SA bolt without the full feedlip on the face of the bolt. Karl.

[birdland101]

Thanks for the info..! I had no problem fitting the FA lower onto it, just a little fitting but I will take your advice..

[JClem555]

I would stay away from trying that though....If some ATF agent got wind of it, I am sure they could find a way to quickly put you in the slammer, even if it was not completely "converted". I have put a semi bolt in a legally registered Mini SMG before. On auto mode, it will in fact jam/malfunction as others have pointed out. The main thing happening was light primer strikes, because the gun is having a hard time chambering the round quickly enough for full auto fire, so the striker loses its inertia by the time it actually does hit the properly chambered round. That was the whole point to the lack of a bottom lip on a semi bolt. However, I did manage to get a few 2-5 round bursts out of the gun, with many more light primer strike failure to fire issues of course, and some really messed up ammo when it did not fire. So, if you did try that, and managed to even get 2 rounds off with one pull of the trigger, by ATF definition of a MG, you have a machine gun. While surely your question was only hypothetical, don't try it.....

[LVHospiceRN]

DON'T DO IT!!! YOU COULD END UP IN JAIL FOR THE REST OF YOUR GRANDCHILDRENS LIFE!!!!!!!!!

My god if you want to try it, Go for it...yeah, a bit of risk but weight the risk of what ya want to do with your desire to know.

Anyone else get tired of everytime ANYONE posts something, there are 100 immediate posts from the "you might be in trouble police."

Its like the US compliance parts in FALs...drop a line in one of the forums that you dont think you have all SEVEN parts, that one of the parts are maybe foreign manufacture. 6,587 posts will follow this about how illegal it is, how your going to jail forever, and ATF will drop guys out of Black Helicopters to search your home.

As a matter of record i dont have a non compliant firearm but if i did, i wouldnt a. advertise the fact or b. worry about it night and day if i did!!!

okay end of rant!!!!!!!!!! :soapbox

[JClem555]

Well, I do not exactly consider myself the "you might be in trouble police." I am simply pointing out that from my experiences, it could possibly work in full auto (in a very limited manner of course). The guy asked what would happen, I told him my opinion and suggested not doing it. I see it as a matter of trying help a fellow board member, not policing the board...

[LVHospiceRN]

...and i think education is a very worthwhile cause, one of the reasons this board is so good.

If this had been posted on FAL FILES or some of the other boards there would have been 20 "your going to jail" posts, each piled on another, with virtually NO attempt to educate, but instead just to point out how stupid the person is and how smart the poster is...

Educate the guy to possible problems....then its his decision. Multiple posts with the same information is like making someone take the second grade over...if they dont pass after two trys, do u think 3 or ever 30 more times will matter? :)

[birdland101]

Yes your correct. I was asking from a purely hypothetical and mechanical point of view since I am not up on the physics of the UZI. I believe the shell jams on the firing pin and does not get chabered correctly without the lower lip on the bolt. That would be my guess as why the shells would jam. It is a sad country when are freedoms are being taken away by overlegislation..isnt it.. Who would assume that I wasnt properly fingerprinted and licensed for carrying out mechanical endeavors on my UZI anyways??????????????????:buttkick :buttkick

[JClem555]

Yeah it is sad, and NFA stuff gets very twisted and convoluted when you get into it. I feel that it pays to be cautious when doing anything even remotely related to it. If you get bored, read some of the law and legal opinions on Bardwell's FAQ:

http://www-2.cs.cmu.edu/afs/cs/user/wbardwel/public/nfalist/law.html

This one is an interesting one as well:

http://www-2.cs.cmu.edu/afs/cs/user/wbardwel/public/nfalist/rr_68368.txt

It shows how a Spitfire .45, manufactured as a semi-auto, could be made to fire full auto, because someone figured out that they could jam the sear back by pressing in the safety while depressing the trigger. The ATF ruling made it a "machine-gun". There are probably quite a few guns out there, where if you really wanted to jam something in the right place, you could get full auto fire out of them...hmmmm?

As for, "Who would assume that I wasnt properly fingerprinted and licensed for carrying out mechanical endeavors on my UZI anyways" well....I mind my own business when I am out shooting. It would be nice if everyone else did. Break out an UZI, even semi auto, at a public range and watch how everyone looks. Shoot off a few rounds full auto, and people think it is show and tell time, and want to ask all about it. Sometimes, that is OK, and expected, but some people are just plain nosey. There was a thread on here recently about how random (no law enforcement affiliation at all) people get the audacity to come up and ask to see someone's "papers" for their machine-guns...That is another whole discussion in itself though...I digress.

[davidl]

as the bolt strips off the second round,said round slides up the bolt face,untill making contact with the firing pin(casing).Inertia
of the bolt hammers the round hard,with round not lined up
with the chamber.The round ends up dog legged badly,jammed
in the chamber. Welding a feed lip doesn't work to well either,
cause that little lip wants to flow long before the bolt does,
it's ugly. Most importantly, its a big time felony.If you don't care
what uncle sugar thinks. Go with the open bolt. remove the
buffer, bust out the blocking bar. and get ready for prison