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Posted: 11/27/2002 7:28:18 PM EDT
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i have recently come into possesion of a polytech m1a type rifle and have a question about it. i know most if not all parts should interchange with the military version but can i puta flash hidder/ bayonet lug on with out violating any laws? is it like a fal where i can put the fs/bl on once i replace so many parts for us made parts? thanks [email protected] |
| the problem with polytec m-14's is that the barrel threads are metric and there is a barrel pin.. as for changing the bolt, i'd do that ASAP.. as the bolt seems to be the softest part in the weapon....get a GI bolt and have it handlapped to fit the receiver... over on the CSP Forum www.jouster.com quite a few guys have done this conversion |
No, as stated above, unless your rifle already had evil features before the AW ban, you'll be in violation of the AW ban. The rifle is a foregin gun. They are not allowed any evil features such as FS, bayo lug, folding stock, pistol grip, grenade launcher, etc. Domestics are allowed one evil feature. That's how you can legally have a pistol grip on a post-ban AR/FAL,etc. You can make your Poly a domestic by replacing enough SPECIFIC parts with US manufactured ones. These parts are SPECIFIC and not just any part on the rifle. I don't have the lsit in front of me so you'll have to do some work on your own and go to the ATF website, or poke around on the net to figure it out. I wouldn't know which ones apply to the M14 type anyway. The bottom line is you need to replace more than just the bolt, and it has to be specific parts. As for the barrel threads being metric, my TRW barrel screwed on there just fine. Perfect fit. I don't know where the reference is that the threads are metric, but they must be a perfect metric conversion to the inch type threads. Many companies, such as Fulton Armory, replace the Chinese barrels with USGI, and I've done it myself without any problem. If they are metric, I'd like to see a reference that actually can state what the metric thread pitch is. The barrel pin is just a set screw. Take it out when you remove the Chinese barrel and just don't bother putting it back in with the USGI barrel. USGI barrel times and torques perfect on a Polytech reciever. Incidentally a USGI bolt also fits fine once a USGI barrel is in place. No need to hack and cut, just simple fitting same as any other M14 type rifle. Go figure! The reciever is USGI dimensions and forged. The Chinese parts are out of spec. It's amazing how well USGI parts fit with other USGI parts instead of trying to hack and whittle metal away to make USGI parts fit with out of spec Chinese. This is a no-brainer really. If you have good headspace, why bother changing things? If you have bad headspace, or want better parts, why only change one part and then grind away to make it fit an out of spec part? Consider changing the barrel as well when you change your bolt. Ross |
Obviously the parts count rule applies to a Norinco as it does to any gun, though I don't think that's what you're asking I have no personal experience with the Norinco product. I personally built a Poly so I can spek to those, but I doubt seriously if anything is different on the Norico from the Poly. It's not like they're owned by different people. It's all the Chinese Govt factory. I wouldn't doubt that the recievers are forged in the same place and the parts are built in the same place and just assembled in different factories, but who knows? I know that many people (Fulton and individuals) have built great guns on both receivers and have never run into any problems of either receiver accepting USGI parts. IIRC your M14type headspaced OK. Is it bad already? I'd just shoot the dog crap out of it until the headspace goes. You can get a barrel and bolt from a number of suppliers. Fulton would be one, as would any of the multitude of folks in SGN. J&T and M&A both carry M14 parts. CMP carries parts as well, though I don't know what. You can find them at gunshows, and on the auction sites every once in a while. www.usarmory.com had some parts as did Orion 7 atwww.m1garandrifle.com. I bought from Orion 7, and they have everything you could want at great prices. I would not recommend doing an M14 barrel swap unless you are mechanically IN-clined. It's a bit more complicated than a FAL, way more than an AR. It actually takes some experience to get everything right, along with a reciever wrench and barrel vise (which I had to make myself). It's not magic or anythging, but if you're only going to do it once, it's probably less expensive to just have someone do it for you. Especially if you haven't done one before. You should be able to find an M14 smith that will tackle the job cheaper than the big buck rebuild. Look in the gunsmith section of SGN or Gunlist, or find one at a gunshow or somewhere. Ross |
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Actually come to think of it, I know a guy who used to be a Class 3 gunsmith and is an expert on GI M14s, he should be able to swap a barrel... I have not received mine yet, sent the money out around two weeks ago, it should be here soon although I can't get in touch with the seller... I'm trusting he is aay for a holiday weekend and isn't checking email or the board. |
| I have heard a rumor that the Polytech and Norinco machine tools and dies were sold to the PRC by Taiwan after Taiwan stopped using them to produce their version of the M14. Of course, Taiwan got the machine tools and dies from Uncle Sam after we stopped producing the M14. That would explain why the Norinco and Polytech receivers match USGI specs so closely. |
| You might look over on www.battlerifles.com those folk have discussed the poly's and norinco M14s alot. |
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