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Check out usbarrelshrouds.com They have some mini parts. View Quote They replied with a tracking number for a new handguard set. That was a pleasant surprise. |
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I can vouch for their customer service. Ordered a green Uzi handguard and one of the screws reach one of the holes. I emailed asking if there was a longer screw or if I could exchange. They replied with a tracking number for a new handguard set. That was a pleasant surprise. View Quote View All Quotes View All Quotes Quoted:
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Check out usbarrelshrouds.com They have some mini parts. They replied with a tracking number for a new handguard set. That was a pleasant surprise. Im starting to realize why |
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I was gonna order their repair section and my buddy told me RTG had a cheaper one. Im starting to realize why View Quote View All Quotes View All Quotes Quoted:
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Check out usbarrelshrouds.com They have some mini parts. They replied with a tracking number for a new handguard set. That was a pleasant surprise. Im starting to realize why That is pretty crappy that they dont seem to care that their jig that they sell in a kit with their section doesnt work. |
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I ended up having a busy weekend with family but I managed to build my HF sandblaster (holy shit that was tedious, worse than their concrete mixer) and I cut the front section and lined it up with the jig. The jig is way too tight in the rear but I'll get to that later.
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I ended up having a busy weekend with family but I managed to build my HF sandblaster (holy shit that was tedious, worse than their concrete mixer) and I cut the front section and lined it up with the jig. The jig is way too tight in the rear but I'll get to that later. https://www.AR15.Com/media/mediaFiles/389530/12081356-C4FE-463B-BD7F-DDF7A00A719F_jpeg-1084307.JPG View Quote ![]() |
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Couple more pics.
![]() I tried out the HF sandblaster very briefly, I think it'll work fine for me ![]() |
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Dude, you need to hurry... the Retro Wave shoot is only a couple of weeks away! ![]() View Quote View All Quotes View All Quotes Quoted:
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I ended up having a busy weekend with family but I managed to build my HF sandblaster (holy shit that was tedious, worse than their concrete mixer) and I cut the front section and lined it up with the jig. The jig is way too tight in the rear but I'll get to that later. https://www.AR15.Com/media/mediaFiles/389530/12081356-C4FE-463B-BD7F-DDF7A00A719F_jpeg-1084307.JPG ![]() |
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I built one with a TIG and the RTG jig... Turned out fantastic. Used an Israeli kit and a German lower. Had no problems with the jig or the build. Mine is .45ACP and I used a full auto barrel and original trunnion. I used a blank receiver channel (no blocking bar) If you need a working jig, I would lend you mine. https://i.imgur.com/JaWoAOi.jpg View Quote |
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Use this and remove the blocking bar? https://www.mckay-ent.com/uzi/uzi-semi-auto-receiver-shell.html View Quote |
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Ok so TIG welding is kinda like soldering, which I am terrible at lol.
This is the first TIG weld of my life, not beautiful but I am still figuring out technique and settings. ![]() It cleaned up super fast though. ![]() And the HF sandblaster works just fine, it's pretty fast actually ![]() Not perfect but I'm good with it for my first try. I also forgot to turn the gas on a couple times which is why there were some pin holes, they don't go all the way through though. |
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I got the old lug off the parts kit, took a bit of grinding and I ruined a screwdriver but I got it lol
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I got the old lug off the parts kit, took a bit of grinding and I ruined a screwdriver but I got it lol https://www.AR15.Com/media/mediaFiles/389530/11394E7A-3B25-4C22-AE7D-BADF424685A7_jpeg-1085376.JPG https://www.AR15.Com/media/mediaFiles/389530/6F45E9F6-9903-443D-958A-C2F0BE904D89_jpeg-1085377.JPG View Quote ![]() |
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But do you already have the bayonet ready to attach? ![]() View Quote View All Quotes View All Quotes Quoted:
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I got the old lug off the parts kit, took a bit of grinding and I ruined a screwdriver but I got it lol https://www.AR15.Com/media/mediaFiles/389530/11394E7A-3B25-4C22-AE7D-BADF424685A7_jpeg-1085376.JPG https://www.AR15.Com/media/mediaFiles/389530/6F45E9F6-9903-443D-958A-C2F0BE904D89_jpeg-1085377.JPG ![]() ![]() My front section with the trunnion has a bayonet lug already on it, but I don't have one. The handguards mount to the bayonet lug so it's still mandatory lol |
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Marc Serbu has a video or two doing this. Rather interesting.
![]() Failed To Load Title Nevermind already posted. |
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Ok so TIG welding is kinda like soldering, which I am terrible at lol. This is the first TIG weld of my life, not beautiful but I am still figuring out technique and settings. https://www.AR15.Com/media/mediaFiles/389530/3A071262-E1AE-4170-A42A-FDBD6E1E9BE0_jpeg-1085371.JPG It cleaned up super fast though. https://www.AR15.Com/media/mediaFiles/389530/88B42717-64EA-412F-AEA4-394B62A70217_jpeg-1085372.JPG And the HF sandblaster works just fine, it's pretty fast actually https://www.AR15.Com/media/mediaFiles/389530/5C3097D0-54DE-4763-8DF3-1129BAB8FA44_jpeg-1085374.JPG Not perfect but I'm good with it for my first try. I also forgot to turn the gas on a couple times which is why there were some pin holes, they don't go all the way through though. View Quote |
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Ok so TIG welding is kinda like soldering, which I am terrible at lol. This is the first TIG weld of my life, not beautiful but I am still figuring out technique and settings. https://www.AR15.Com/media/mediaFiles/389530/3A071262-E1AE-4170-A42A-FDBD6E1E9BE0_jpeg-1085371.JPG It cleaned up super fast though. https://www.AR15.Com/media/mediaFiles/389530/88B42717-64EA-412F-AEA4-394B62A70217_jpeg-1085372.JPG And the HF sandblaster works just fine, it's pretty fast actually https://www.AR15.Com/media/mediaFiles/389530/5C3097D0-54DE-4763-8DF3-1129BAB8FA44_jpeg-1085374.JPG Not perfect but I'm good with it for my first try. I also forgot to turn the gas on a couple times which is why there were some pin holes, they don't go all the way through though. |
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Looks like the gas setting is to high on your welder, you should have no splatter.
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Ok so TIG welding is kinda like soldering, which I am terrible at lol. This is the first TIG weld of my life, not beautiful but I am still figuring out technique and settings. https://www.AR15.Com/media/mediaFiles/389530/3A071262-E1AE-4170-A42A-FDBD6E1E9BE0_jpeg-1085371.JPG It cleaned up super fast though. https://www.AR15.Com/media/mediaFiles/389530/88B42717-64EA-412F-AEA4-394B62A70217_jpeg-1085372.JPG And the HF sandblaster works just fine, it's pretty fast actually https://www.AR15.Com/media/mediaFiles/389530/5C3097D0-54DE-4763-8DF3-1129BAB8FA44_jpeg-1085374.JPG Not perfect but I'm good with it for my first try. I also forgot to turn the gas on a couple times which is why there were some pin holes, they don't go all the way through though. |
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I'm not a welder at all, but I agree that something is off there on that weld, there should be no splatter like a MIG. What voltage and gas are you running?
You might be using too much pressure on your gas? Even on a bad TIG weld they're still fairly clean. I think I ran around 25psi or so on my Argon with a few seconds of post flow. I also used a 3/32 tungsten ground to a pretty fine point. Keep in mind as well that it's DC Electrode Negative... if you hook it up backwards, you'll get huge splatter like that. Don't ask how I know that ![]() |
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Looks like the gas setting is to high on your welder, you should have no splatter. View Quote I don't think the gas being up too high would cause that anyway. |
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Cool to see that you are making progress despite the earlier issues. View Quote View All Quotes View All Quotes Quoted:
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Ok so TIG welding is kinda like soldering, which I am terrible at lol. This is the first TIG weld of my life, not beautiful but I am still figuring out technique and settings. https://www.AR15.Com/media/mediaFiles/389530/3A071262-E1AE-4170-A42A-FDBD6E1E9BE0_jpeg-1085371.JPG It cleaned up super fast though. https://www.AR15.Com/media/mediaFiles/389530/88B42717-64EA-412F-AEA4-394B62A70217_jpeg-1085372.JPG And the HF sandblaster works just fine, it's pretty fast actually https://www.AR15.Com/media/mediaFiles/389530/5C3097D0-54DE-4763-8DF3-1129BAB8FA44_jpeg-1085374.JPG Not perfect but I'm good with it for my first try. I also forgot to turn the gas on a couple times which is why there were some pin holes, they don't go all the way through though. My kit didn't have a rear handguard stud or the receiver piece to cut it off of so I ordered one from BWE. A buddy of mine is trying to talk me out of cutting the rear off and welding on my entire parts kit rear section. I think cutting the backing plate and rear sight mount off the old one and welding them to this one would be harder than just chopping the rear off and welding the new one on. Although I don't see how you could use the jig for that since you couldn't get it out after it was welded. |
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I'm not a welder at all, but I agree that something is off there on that weld, there should be no splatter like a MIG. What voltage and gas are you running? You might be using too much pressure on your gas? Even on a bad TIG weld they're still fairly clean. I think I ran around 25psi or so on my Argon with a few seconds of post flow. I also used a 3/32 tungsten ground to a pretty fine point. Keep in mind as well that it's DC Electrode Negative... if you hook it up backwards, you'll get huge splatter like that. Don't ask how I know that ![]() View Quote For clarification I'm using 2% Ceriated 3/32" tungsten ground sharp (chucked in a cordless drill and ground on a bench grinder). I think you meant what Amperage am I running (not voltage), this was mostly done at around 35-40A and yes I'm using 100% Argon. Gas lens with a pyrex cup. I think next time around I'll bump the amperage and move a little faster, part of the reason for the crappy looking beads is I was waiting too long for a puddle to form because I think the heat was a bit low. I was probably overly cautious about warpage, especially since it was in a jig. |
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My front receiver piece was on the short side, the repair section is plenty long but when I cut the front section to mate up I cut the bottom off not knowing I needed to leave it.
There wasnt enough there to fill this hole even if I didn't cut it off but I didn't help the matter ![]() You can see the piece on the table that I had cut off, one side of that was my cut and the other was the way it came (the short ends (sides) I removed to use it to "patch" this hole. I could have done this several ways but I wanted more practice with the TIG so I figured welding around this piece would be good for me to try. |
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I tacked the front of it and then hammered it into shape to be flush with the hole. Then I just had to fill in around it
![]() There was a decent gap around it, which made it hard for me to weld (a butt joint would have been easier for a newbie I think) but I managed to fill it in. Again, more heat would have made this cleaner probably. But once again very little grinding to get it smooth ![]() And a quick trip to the blast cabinet ![]() Once again not what I would call perfect but I'm happy with it for my day TIGing. I'm sure with practice I'll make it look pretty |
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I need to buy a welder and learn to use it one of these days. Too many cool projects I could be doing. Great post OP!
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I tacked the front of it and then hammered it into shape to be flush with the hole. Then I just had to fill in around it https://www.AR15.Com/media/mediaFiles/389530/90AF1A6D-09FF-41D1-8138-632E498F2EEB_jpeg-1085546.JPG There was a decent gap around it, which made it hard for me to weld (a butt joint would have been easier for a newbie I think) but I managed to fill it in. Again, more heat would have made this cleaner probably. But once again very little grinding to get it smooth https://www.AR15.Com/media/mediaFiles/389530/B9A06B90-DB3A-4DFC-BBC0-312332D9712E_jpeg-1085549.JPG And a quick trip to the blast cabinet https://www.AR15.Com/media/mediaFiles/389530/325F3023-7F4C-4E22-AC27-9EA271948D6B_jpeg-1085550.JPG Once again not what I would call perfect but I'm happy with it for my day TIGing. I'm sure with practice I'll make it look pretty View Quote I ran into the same problem while considering welding on a complete rear piece. I was going to make a smaller jig out of aluminum. A good welder could do it. I am not good. I have a couple of rear receiver stubs in my spare parts box. |
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It is stamped sheet metal. With coating, the forearm, and top cover it will look great. [/b] I ran into the same problem while considering welding on a complete rear piece. I was going to make a smaller jig out of aluminum. A good welder could do it. I am not good. I have a couple of rear receiver stubs in my spare parts box. View Quote View All Quotes View All Quotes Quoted:
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I tacked the front of it and then hammered it into shape to be flush with the hole. Then I just had to fill in around it https://www.AR15.Com/media/mediaFiles/389530/90AF1A6D-09FF-41D1-8138-632E498F2EEB_jpeg-1085546.JPG There was a decent gap around it, which made it hard for me to weld (a butt joint would have been easier for a newbie I think) but I managed to fill it in. Again, more heat would have made this cleaner probably. But once again very little grinding to get it smooth https://www.AR15.Com/media/mediaFiles/389530/B9A06B90-DB3A-4DFC-BBC0-312332D9712E_jpeg-1085549.JPG And a quick trip to the blast cabinet https://www.AR15.Com/media/mediaFiles/389530/325F3023-7F4C-4E22-AC27-9EA271948D6B_jpeg-1085550.JPG Once again not what I would call perfect but I'm happy with it for my day TIGing. I'm sure with practice I'll make it look pretty [/b] I ran into the same problem while considering welding on a complete rear piece. I was going to make a smaller jig out of aluminum. A good welder could do it. I am not good. I have a couple of rear receiver stubs in my spare parts box. I guess I could get some aluminum bar stock and measure the existing jig and mill it to shape. If the rear section isn't straight will it bind up the bolt? |
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That's what I was thinking! I guess I could get some aluminum bar stock and measure the existing jig and mill it to shape. If the rear section isn't straight will it bind up the bolt? View Quote View All Quotes View All Quotes Quoted:
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I tacked the front of it and then hammered it into shape to be flush with the hole. Then I just had to fill in around it https://www.AR15.Com/media/mediaFiles/389530/90AF1A6D-09FF-41D1-8138-632E498F2EEB_jpeg-1085546.JPG There was a decent gap around it, which made it hard for me to weld (a butt joint would have been easier for a newbie I think) but I managed to fill it in. Again, more heat would have made this cleaner probably. But once again very little grinding to get it smooth https://www.AR15.Com/media/mediaFiles/389530/B9A06B90-DB3A-4DFC-BBC0-312332D9712E_jpeg-1085549.JPG And a quick trip to the blast cabinet https://www.AR15.Com/media/mediaFiles/389530/325F3023-7F4C-4E22-AC27-9EA271948D6B_jpeg-1085550.JPG Once again not what I would call perfect but I'm happy with it for my day TIGing. I'm sure with practice I'll make it look pretty [/b] I ran into the same problem while considering welding on a complete rear piece. I was going to make a smaller jig out of aluminum. A good welder could do it. I am not good. I have a couple of rear receiver stubs in my spare parts box. I guess I could get some aluminum bar stock and measure the existing jig and mill it to shape. If the rear section isn't straight will it bind up the bolt? |
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Related, I am modifying the hardware to permanently attach a wood buttstock.
How difficult of a project would it be to make a new buttstock? Same shape just about 1-2" longer? |
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I'm a little late to the party but I'm in to see more full auto goodness.
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Damn op, you have some huge brass balls to learn Tig welding on a project like that. I have done quite a bit of Tig welding but always do a little bit of practicing with some scrap before going at it.
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Anyone got a link to a machining diagram to convert the bolt to semi? Hard to believe all the semi bolts out there are new made, when they give trade credit for FA bolts.
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I recommend practicing on scrap till you get the hang of it.
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Anyone got a link to a machining diagram to convert the bolt to semi? Hard to believe all the semi bolts out there are new made, when they give trade credit for FA bolts. View Quote |
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I ended up having a busy weekend with family but I managed to build my HF sandblaster (holy shit that was tedious, worse than their concrete mixer) and I cut the front section and lined it up with the jig. The jig is way too tight in the rear but I'll get to that later. https://www.AR15.Com/media/mediaFiles/389530/12081356-C4FE-463B-BD7F-DDF7A00A719F_jpeg-1084307.JPG View Quote It makes me wonder if I could take my Vector 4332, fill the dimples with puddy, and then Fill the cavity with resin that way it is a true to spec cast |
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I welded in the grip stick lug, got a better feel for the settings on the welder.
![]() This would have looked better but my tungsten got dull and I burned a hole through and had to fill it back in (top right of the weld shown above). I also chopped off the back of the 80% and started mating up the parts kit rear. Try as I might I still cut a little too much off the 80% but I'll fill it in. Grinder and paint and all that lol |
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Damn op, you have some huge brass balls to learn Tig welding on a project like that. I have done quite a bit of Tig welding but always do a little bit of practicing with some scrap before going at it. ![]() View Quote |
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Yeah, I'm wondering about slotting the FA bolt as well. Do you slot it with a milling machine or what? I have a Grizzly mini-mill - would that work? View Quote View All Quotes View All Quotes Quoted:
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Anyone got a link to a machining diagram to convert the bolt to semi? Hard to believe all the semi bolts out there are new made, when they give trade credit for FA bolts. |
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You have to anneal the bolt to slot it, they're hard AF. View Quote View All Quotes View All Quotes ![]() Quoted:
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I got the old lug off the parts kit, took a bit of grinding and I ruined a screwdriver but I got it lol https://www.AR15.Com/media/mediaFiles/389530/11394E7A-3B25-4C22-AE7D-BADF424685A7_jpeg-1085376.JPG https://www.AR15.Com/media/mediaFiles/389530/6F45E9F6-9903-443D-958A-C2F0BE904D89_jpeg-1085377.JPG ![]() ![]() My front section with the trunnion has a bayonet lug already on it, but I don't have one. The handguards mount to the bayonet lug so it's still mandatory lol ![]() Well, you should still have a bayonet for later... for... reasons. Magdump, then charge and stab the target in the 10-ring. It's the 80s action hero thing to do! |
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Anyone got a link to a machining diagram to convert the bolt to semi? Hard to believe all the semi bolts out there are new made, when they give trade credit for FA bolts. View Quote ![]() As far as dimensions and such... not really, but it's dead simple (other than the bolt being hardened) and comparison pictures can be found here. The basic dimensions to shoot for are mostly visual... flat on both rails below the ejection port, then weld and build up the front to the same thickness as the original rail. The photos really do tell the whole story. For the denial/blocking bar, you relieve the bolt to fit. The hardest part for most people is setting the bolt up properly for facing off the firing pin and drilling the new firing pin channel straight and true. |
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I'm not a welder at all, but I agree that something is off there on that weld, there should be no splatter like a MIG. What voltage and gas are you running? You might be using too much pressure on your gas? Even on a bad TIG weld they're still fairly clean. I think I ran around 25psi or so on my Argon with a few seconds of post flow. I also used a 3/32 tungsten ground to a pretty fine point. Keep in mind as well that it's DC Electrode Negative... if you hook it up backwards, you'll get huge splatter like that. Don't ask how I know that ![]() View Quote You really have to pull the torch away fast or it'll "spray" some material around leaving some of that spatter. Ask me how I know ![]() |
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Quoted: Alternatively, they can be ground just fine. Hell, I did one years ago with an angle grinder! ![]() Duhhhhhh. I don't know what I was thinking! ![]() Well, you should still have a bayonet for later... for... reasons. Magdump, then charge and stab the target in the 10-ring. It's the 80s action hero thing to do! View Quote |
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You are building a full auto Uzi.
Most here could build a full auto ar 15. Surely yours is legal or we would not be seeing it here. Please explain to a dumbass what's going on. |
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