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No, the firing machanisms are not for sale anywhere that I'm aware of. I think there's at least one legally owned AT4 9mm trainer that an ordnance dealer was selling awhile back. But other than that, nothing. I've always wanted to own/make one so I'll be following this thread closely. I even have a bit of the special 9mm tracer ammo used in the AT4's to match the trajectory of an AT4 projectile. I probably have around 5 different types of AT4 tubes in my ordnance collection.
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If I remember correctly, the tube itself and trigger mechanism are different on the 9mm trainers compared to the standard AT4 tubes. But if you are making your own breach piece/gun from the start, this shouldn't be an issue.
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Yes, I think I will have to make my own breech loading 9 mm. I am going to use a simple AR15 barrel and rotating lock for the breach, like the real trainer. I took apart the firing mechanism and it looks like they used a simple 45/45 to get the horizontal movement to vertical to hit the firing primer on the missile. I think something like a spring loaded firing pin and armature would work. I'll post up pictures when I get the basic idea down.
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I have a spent tube that I bought years ago. Always thought eventually I would set it up to fire model rockets. Just never have gotten around to it.
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Quoted:
Yes, I think I will have to make my own breech loading 9 mm. I am going to use a simple AR15 barrel and rotating lock for the breach, like the real trainer. I took apart the firing mechanism and it looks like they used a simple 45/45 to get the horizontal movement to vertical to hit the firing primer on the missile. I think something like a spring loaded firing pin and armature would work. I'll post up pictures when I get the basic idea down. View Quote Sounds great. Keep me updated and I'll try to help anyway I can. |
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Just some NFA questions perhaps you have looked into. If you used a sub caliber device (not a the signaling device sub caliber launcher for the M72 see link below) wouldn't the tube need to be registered as a destructive device like a 37 mm flare launcher and a beehive round? Otherwise would the sub-caliber device be an aow if it doesn't meet the emergency signalling device standard?
http://www.ar15.com/forums/t_6_2/383605_My_new_Rocket_Launcher__M72_LAW_with_M190_adapter.html |
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Just some NFA questions perhaps you have looked into. If you used a sub caliber device (not a the signaling device sub caliber launcher for the M72 see link below) wouldn't the tube need to be registered as a destructive device like a 37 mm flare launcher and a beehive round? Otherwise would the sub-caliber device be an aow if it doesn't meet the emergency signalling device standard? http://www.ar15.com/forums/t_6_2/383605_My_new_Rocket_Launcher__M72_LAW_with_M190_adapter.html View Quote I'm guessing that assuming a barrel length over 16 inches(not sure if the tube would count as the barrel length or if the actual 9mm barrel inside the tube has to be over 16 inches) and an overall length over 26 inches, the AT4 would be classified as a rifle. You can build a rifle without ATF approval. |
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I have clicked the subscribe button. OP, don't let me down. View Quote Indeed! Excellent project. I once shot more of those trainers than I can imagine, had a guy behind me just reloading after every shot burning up all the excess 9mm. Good times, I love the hollow pop noise it makes. Shooting a real one was more fun though. Good luck OP, I look forward to seeing your progress! |
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Yes, the barrel inside the tube will be 16" AR15 9mm carbine barrel, so it would be a rifle length. The tube is just the "stock and trigger" I suppose you could use it w/o the tube, but then it is more like a pistol, both can be made w/o BAFTE issues. Either way, I believe it is legal to build and own w/o special registration but I would check your local laws too. I am LEO in a gun friendly state so there will be no problems for me except finding good 9mm tracer to shoot. I think the AT-4 9mm were sub-sonic to match the trajectory of the missile. Nice to have, but not necessary for shooting card board cutouts of tanks.
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I didn't know where this build fit in so I will put it here. I was getting bored waiting for ATF paperwork on my other projects so I went looking for something to do. I recently purchased an AT-4 spent shell to hang on my office wall o' swag and I thought it would make a cool sub-caliber rifle. I remember training on one back when I was in the Corps and thought it would be a fun project. Here is what I have so far: I have a few questions. Does anyone know if you can just buy the 9mm back end shown in the training manuals? If no, does any one have blueprints for the 9mm trainer module? If no, I will have to build one from scratch. Thanks in advance for any assistance or ideas. http://i861.photobucket.com/albums/ab177/rncbinc/IMG_2699_zps27088f11.jpg View Quote I believe we met yesterday. I was with a guy looking at some paintball stuff. |
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Yes we did, you gents had some interesting stories, I hope your friend has success in his new project. I will shoot you all an email when we get a range day set for the next machinegun shoot.
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If you build these, I think there would be a small market for them.
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theres a place in California that sell the bolts, I saw them listed as an unknown bolt for 50 bucks, I knew what it was but never bothered to email them. i'd have to do some digging to find them. I think it was dealers warehouse or some shit but i'm not 100% on that.
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I found a Dealers Warehouse Gun Shop in Modesto CA....but no AT4 parts on their list in the web sight. How long ago was it, maybe they sold them or took them down cause no one wanted them. I will call them.
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I don't really remember who had them but I do recall the place was in California. What companies other than dealers warehouse and northridge deal in gun parts in Cali? iIRC the firm was in SoCal, it may be a wild goose chase but I vividly remember seeing them in their miscellaneous parts section. I tried finding the company but had no luck, I do remember they would have an obscure ad in shotgun news once in a while.
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once this is built, can you post the completed design or offer to sell them for 10 bucks? I would LOVE to have an AT4 simulator AOW that I could take to the range, It would live in its own pelican case (OD green, obligatory stickers obviously), and I would scare the SHIT out of people at the range...
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I need 1 or 2 more people to jump in and I can start ordering parts! I am almost done with the design, all I have left are the small pieces in the bolt. I also ordered an AR15 9mm extractor. I think I will just copy the AR15 9mm bolt face to match up with the AR15 9mm barrel. I am calling mine a "single shot bolt action rifle" because the barrel is at least 16" long and when you attach it to the "stock" tube it is well over 26" long so I don't think it necessary to get the $5 stamp LOL. You can bet the guys at your local range will get a kick out of it for sure. I'm going to put reactive target mix, the sensitive stuff, behind cardboard cut outs of tanks and shoot tracers at them till the go boom! Just one more station to add to the annual pumpkin shoot.
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This is pretty awesome. I loved shooting the trainers in the Army. I've had a tube for the longest time and wanted something like this. Keep up the awesome work!
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once this is built, can you post the completed design or offer to sell them for 10 bucks? I would LOVE to have an AT4 simulator AOW that I could take to the range, It would live in its own pelican case (OD green, obligatory stickers obviously), and I would scare the SHIT out of people at the range View Quote Once I have it all done, I will send you the DXF. if you have access to CNC it will be an easy weekend project. |
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how in the hell would you ship one??? put a lable on the side of it and a few stamps and walk into the post ofice??
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I have a "mint" AT4 tube and a friend wanted it. A few stamps should do it, right???
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Yes we did, you gents had some interesting stories, I hope your friend has success in his new project. I will shoot you all an email when we get a range day set for the next machinegun shoot. View Quote Your sailboat story trumped mine I'll keep you updated on the project. This one looks like it will be fun too. |
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No doubt about that. I just ordered some material to turn out a prototype before I order the CNC parts. No point shelling out 2.5K for parts(5 sets) if you don't if the design works. The first one will differ only in that it fits into the bell in stead of replacing the bell. 3" 6061 aluminum round is much cheaper then 6" 6061 aluminum round. So by next week I will get into the shop and start the machining processes. I will also be testing the springs and other small pre-manufactured parts for serviceability. I will post photo's of the process for all those who are interested.
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No doubt about that. I just ordered some material to turn out a prototype before I order the CNC parts. No point shelling out 2.5K for parts(5 sets) if you don't if the design works. The first one will differ only in that it fits into the bell in stead of replacing the bell. 3" 6160 aluminum round is much cheaper then 6" 6160 aluminum round. So by next week I will get into the shop and start the machining processes. I will also be testing the springs and other small pre-manufactured parts for serviceability. I will post photo's of the process for all those who are interested. View Quote Sounds good. Has the final design changed from the "inside the bell action" pictured in the CAD drawings towards the top of the page to something else? |
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No changes to the final CNC plan, it will still be a total replacement of the rear bell with one that has the barrel nut threads and breech machined into it. I like the idea of not having to modify the existing rear bell so I can convert the tube back to a totally safe "wall hanger" with 3 screws.
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No changes to the final CNC plan, it will still be a total replacement of the rear bell with one that has the barrel nut threads and breech machined into it. I like the idea of not having to modify the existing rear bell so I can convert the tube back to a totally safe "wall hanger" with 3 screws. View Quote Ahhhh, I see it now. Definately makes sense. |
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Tag for info and for being AGB's roommate and randomly running into this thread.
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