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Posted: 4/8/2011 3:10:58 PM EDT
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Going to finally get around to twisting together an AMD65. What are other options out there for a muzzle device besides the atrocious Tapco brake/barrel extension?
Would rather stick with the original Hungarian barrel as opposed to a US made barrel. Any other US made options for a muzzle brake/extension? Thanks |
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alot of people are using polish tantal breaks, you can get really nice ones from CNC warrior That's what I was going to suggest. I have one here I ended up not using and it's well made. CNC Warrior also has 2" and 4" barrel extensions, which open up your options by quite a bit- a 2" extension and pretty much any regular size (2"+) brake or flash suppressor will make 16". |
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Yea and be sure to weld it on really good, mine had a spot weld the size of a Pea in between the cleaning rod guide and it broke the first time I emptied a 75round drum and got it really hot.
ETA: Thats IF you decide to hot weld It. I ground the weld off smooth, painted with high heat paint. Then coated the threads with JBweld and screwed it on with a AR15 crush washer slightly enlarged (about .05") with a Dremmel sanding drum. |
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ETA: Thats IF you decide to hot weld It. I ground the weld off smooth, painted with high heat paint. Then coated the threads with JBweld and screwed it on with a AR15 crush washer slightly enlarged (about .05") with a Dremmel sanding drum. You attached a device to the end of a 12.6" AMD barrel that way? 
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I got mine here: http://ak-builder.com/index.php?dispatch=products.view&product_id=30042 I think it looks better than the Tapco offering. Customer service, commo, and speed of shipping were all great.  |
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ETA: Thats IF you decide to hot weld It. I ground the weld off smooth, painted with high heat paint. Then coated the threads with JBweld and screwed it on with a AR15 crush washer slightly enlarged (about .05") with a Dremmel sanding drum. You attached a device to the end of a 12.6" AMD barrel that way?
That's what I just said isn't it, the pin/welded requirements are for manufactures... not homebuilders, there was a thread on this about a year ago. A member sent the BATFE a letter for a definition of "permanent" for the average builder. The BATFE replied and the answer was "not able to be removed with simple tools and hand pressure." One of the recommendations was cold weld. So take your ATF hall monitor attitude elswere please
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ETA: Thats IF you decide to hot weld It. I ground the weld off smooth, painted with high heat paint. Then coated the threads with JBweld and screwed it on with a AR15 crush washer slightly enlarged (about .05") with a Dremmel sanding drum. You attached a device to the end of a 12.6" AMD barrel that way?
That's what I just said isn't it, the pin/welded requirements are for manufactures... not homebuilders, there was a thread on this about a year ago. A member sent the BATFE a letter for a definition of "permanent" for the average builder. The BATFE replied and the answer was "not able to be removed with simple tools and hand pressure." One of the recommendations was cold weld. BS. The standards for permanent attachment are the same for everyone, manufacturer and amateur alike - welding, high temperature solder, and blind pinning are the approved methods. See the NFA Handbook. It's on the BATFE website. Lengthening a rifle barrel that's less than 16" long is serious business. Doing it in a fashion that's not approved results in posession of an unregistered SBR, which is a felony. Following misinformation from a gun board is not a defense to the charge. |
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The standards for permanent attachment are the same for everyone, manufacturer and amateur alike - welding, high temperature solder, and blind pinning are the approved methods. See the NFA Handbook. It's on the BATFE website.
Lengthening a rifle barrel that's less than 16" long is serious business. Doing it in a fashion that's not approved results in posession of an unregistered SBR, which is a felony. Following misinformation from a gun board is not a defense to the charge. Look friend, Im not here to bicker about this all day, I saw the scanned letter from the BATFE myself on a thread on this websight, so someone at the BATFE is either misinformed or a dumbass. With that being said. What is one supposed to do when there factory AMD65 spot weld breaks and the user is left with a unregisted SBR with the muzzle extension laying on the ground, and one does not have acess to a welder? "what happened to me" And the Handbook does not specify hot or cold weld, only hot solder.If you are going word for word, then go word for word. I can tell you one thing for sure, my meathod is a hell of a lot stronger than the pissy spot weld that came from the factory, and I would challange anyone to remove the attachment without destroying the threads. |
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If the manufacturer failed to install the extension correctly the proper thing to do is either attach it in accordance with the law or return it for repair.
Here's the quote from the NFA Handbook, Section 2.5 "NOTE: an acceptable method of permanently installing a barrel extension is by gas or electric steel seam welding ...". One more thing: Letters from the BATFE bind the BATFE to the person to whom it is addressed. Should BATFE change its position, the person to whom the letter was addressed can rely on the letter unless BATFE notifies that person in writing that the position has changed. Other people who may have seen the letter or who may posess a copy of the letter are not entitled to rely on it. This being America, you should be free to risk your freedom in any fashion you wish. You should not pass out advice which, if followed, could cause someone else to lose theirs. |
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I got mine here: http://ak-builder.com/index.php?dispatch=products.view&product_id=30042 I think it looks better than the Tapco offering. Customer service, commo, and speed of shipping were all great. <a href="http://img825.imageshack.us/i/amd2d.jpg/" target="_blank">http://img825.imageshack.us/img825/3908/amd2d.jpg</a> I don't see a major difference between that brake and the one-piece Tapco extension/brake. Both do a great job of replacing the awful two-piece extensions (using the original brake and a 2" threaded barrel extension - these are all crooked and should be simply thrown away because it's impossible to get the original brake off the extension without destroying it) and copying the appearance of the original brake. The thing about the Tapco piece is discussion of it may be pointless - as far as I know, it has been out of production for over a year. The two-piece extensions are crooked because of a fatal error during assembly; in order to save time, or maybe just out of ignorance, they did not screw the extension onto the barrel tight before welding to the sight base - they backed off on it to index it, leaving it loose . As you know, there is a lot of slop in the threads, so the extension could be pointed in any direction around the clock depending on how it flopped when they welded it. The correct method would have been to time the extension by removing steel from the back end until it got tight and was lined up right, then weld. Anyone installing any barrel extension should do the same - it takes a few minutes longer but is well worth it. BTW, this is why so many two-piece extensions break the weld at the muzzle - the weldment fatigues and breaks because the assembly was welded in a loose condition, and firing caused the extension to shake, stressing the weld. Another problem solved by the one-piece extension is the two-piece extension is almost 1" longer than it has to be. The Tapco unit brings it to 16.2", and that leaves way more room for timing than would ever be needed even by the most klutzy moron on here. So, if you use a one-piece other than the Tapco, get the length of it before buying and make sure it will be long enough but not too long. Also, I found the Tapco brake to be perfectly machined and threaded to be concentric to the threads on the barrel, and the brake looks and functions just like the original, blowing daylight-visible fire out of both sides:) 
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The standards for permanent attachment are the same for everyone, manufacturer and amateur alike - welding, high temperature solder, and blind pinning are the approved methods. See the NFA Handbook. It's on the BATFE website.
Lengthening a rifle barrel that's less than 16" long is serious business. Doing it in a fashion that's not approved results in posession of an unregistered SBR, which is a felony. Following misinformation from a gun board is not a defense to the charge. Look friend, Im not here to bicker about this all day, I saw the scanned letter from the BATFE myself on a thread on this websight, so someone at the BATFE is either misinformed or a dumbass. With that being said. What is one supposed to do when there factory AMD65 spot weld breaks and the user is left with a unregisted SBR with the muzzle extension laying on the ground, and one does not have acess to a welder? "what happened to me" And the Handbook does not specify hot or cold weld, only hot solder.If you are going word for word, then go word for word. I can tell you one thing for sure, my meathod is a hell of a lot stronger than the pissy spot weld that came from the factory, and I would challange anyone to remove the attachment without destroying the threads. ATF letters really only apply to the person they were sent to. Scanned copies really do you no good from a legal perspective. There are also letters out there that contradict each other, such as the letters about SBR's and 922r requirements. When it comes down to it, the ATF will do what they want when the time comes. I'd play it better safe than sorry with things like this and follow the written requirements and ignore letters people post. But thats just me, do whatever you like. 
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