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Interesting note on the 6.5 mags, I may give that a try, those mags are cheap. |
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Her patrol rifle is a colt with an a2 upper and 1/7" lightweight 16". Her home rifle is the same but with an A1 upper. Blackthorne is the company I was looking at for M4 and I've read tooooo many posts to know to stay away. IDK of anyone else making M4 or lightweight barrels. |
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Whew, good job on staying away from Blackthorne. Almost all of the vendors at the top of the page will carry barrels. The M4 folks throw back and forth refer to two different things. One is the contour of the barrel (including M203 launcher relief cut), the other is M4 feedramps on the barrel extension. If you have a barrel with M4 feedramps, it's a good idea to have an M4 feedramp cut receiver. The larger grooves facilitate feeding. Barrel profiles you may want to look at would be lightweight, government and pencil. They are all smaller diameter and light when compared to heavy barrels. Edit: Woops, forgot we were talking about 7.62x39. The vendors that have 7.62x39 barrels are Model 1 Sales, Del-Ton, MGI and...one other, can't remember off the top of my head. The Del-Ton is a Wilson Arms barrel and is lighter weight than the others. The MGI one is M4 profile IIRC. |
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DPMS, Sabre Defense and Olympic Arms also offer 7.62x39 barrels. ArmaLite makes a 16" middy, but is only selling complete rifles. DoubleStar offers a 7.62x39, but it's not on their website and I don't know if the sell barrels/barrel assemblies.
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Thanks for the help fellas. I just picked up a "Older" style Model 1 and bolt for $200 - 1/2x36 thread IIRR not he new 5/8x24 unfortunately but since Im putting on either phantom or vortex t doesnt matter I think Im covered.
Now... A1 upper or A3... LOL |
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has anyone tried to cut down a 20" A4 barrel to 18".??
seems that that combo of longer sight radius and slightly shorter barrel would be perfect. |
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Do they actually have them in stock? Someone (I believe it was TANGOCHASER) posted a few days ago that they had them in their catalog, but they weren't actually available. |
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Some comparison shots of the MGI Enhanced 7.62x39 bolt and firing pin. Model 1 says they use the same firing pin for 5.56 and 7.62x39.
LRSNutJob, Sabre Defence lists M4 profile 7.62x39 barrels. |
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I called Doublestar today to see what the holdup was in getting my dealer catalog, and I also checked on what they offer in 7.62x39. They offer both 16" and 20", they are both a HEAVY profile and are threaded. NEITHER are chrome lined and they do have them in stock.
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Nope.
I feed it everything from Wolf, to Monarch, Remington to handloads. over 5000 rounds 100 or so were some pretty hot handloads with no trouble.
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Have you seen/loaded any ballistic type bullets? |
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I have fired Nosler 125 (308) ballistic tips reloaded with 25.5 reloader 7
She fed just fine and accuracy was excellent in my model 1 7.62x39 |
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Has any one tried the Del-ton barrels. Are they instock? And what is the thread on the barrel for the muzzle break.
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I ordered a Del-Ton 7.62x39 upper on 7/1 only to find out that they are out of barrels and I still do not have it. Don't know for a fact what thread they use but believe it is 1/2 - 36. I'd much prefer 5/8 - 24 so I could use regular 308 muzzle devices. |
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Arcticwolf:
What rang were you shooting at?? I am looking for good places in the phoenix AZ area to shoot with out the nucance of a range master. I usualy go to Casagran but they have resently made "improvements" that make it dificult to set up my heavy steel targets on the range. I may have to just start shooting at remote deasert locations. Thanks |
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I noticed that a few of the companies that make 7.62x39 barrels only make 16"ers. Is that because carbines are more popular, or because there wouldn't be a significant velocity gain by going to 20"?
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Artic wolf has a 20" Id like to know if there really is a difference between the 16 and 20.
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Rumor mongering at its finest (from CProducts 7.62x39 Magazine? (Page 17)):
And:
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7.62x39mm AR ballistics?
(I posted this in another thread, but it seems like it might belong in here.) 9/6/08 At the range this morning I had both of my 7.62x39mm ARs. One is a 16" Model 1 kit gun with an Aimpoint M4 and the other has a Model 1 barrel that's been cut down to 14.5", with an Aimpoint T-1. Both were zeroed at 50 yards, and checked this morning. That's zeroed as per me, which is to say they were both consistently hitting in the 1.85" circle that is the bullseye on the targets I get at the range. So I decided to try 'em on the 100 yard. The 14.5" is new and I hadn't done that with it, and I don't really remember the last time I tried the 16" on the 100. This may well be old hat to the more ballistics savvy amongst us, but it was a discovery for me. Firing Sellier & Bellot 123 gr. FMJ out of both guns, the 16" was hitting pretty consistently about 2" high while the 14.5" was pretty much on the bullseye (as much as I am on the 100 - the altitude was right, but I still find accuracy with a 4 MOA red dot at 100 yards to be a bit challenging). A better explanation from those who know is welcome, but my best guess is that the slightly lower velocity that round gets from the 14.5" barrel allows that 123 grain bullet to drop, compared to one flying out of a 16" barrel, enough to be pretty much flat at 100 yards with its 50 yard ballistic profile. As I say, further revelation should I be guessing wrong is encouraged. |
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She's pretty much done. Going to break her in before I paint the upper.
http://i168.photobucket.com/albums/u196/fg42gewehr/weapons004.jpg DPMS lower Colt M-16 upper Bushmaster carrier, Model 1 Sales Bolt, Firing pin mod. Model 1 Furniture Magpul Grip + Trigger guard Model 1 Sales 16" 1/10 It's a utility gun..... :-) |
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Nice build there. Why not change-out all the furniture for A1 stuff to match the upper? |
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I have the furniture but since its a x39 I didnt think about it. I thought about it and im actually changing the A1 upper to my wife's AR. She has a 5.56mm 16" light weight Colt 1/7 barrel on hers with a 4x scope. I'll end up throwing the A2 upper on this one.
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Whats the best upper to go with on my 1st 7.62...Mod1 or DPMS??
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I don't know if anybody can directly compare the two from experience. The owners/shooters of both seem to like 'em. The Model 1 (ER Shaw barreled) upper and barrel assembly I use have been great, and Model 1 almost always has them in stock. |
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Colt45guy, whose barrel (I'm guessing either ER Shaw or Wilson) comes with the J&T upper? |
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good question....I have no idea--but it shoots fine |
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anyones thought on this? what are the advantages/disadvantages of having a flashhider instead of the target crown? not taking into account suppressor mounting. |
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Just now noticed a thread where primer strikes too light to fire Wolf on the first try ~60% of the time were reported with use of an MGI bolt. Wolff hammer springs were suggested, as they often are. That does seem to rectify the problem.
But I'll note that I have an MGI bolt/FP in one 7.62x39 AR and the Model 1 bolt in the other They also have a Geissele DMR trigger in one and a Geissele SSA in the other and I have no problems with failures to fire. |
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MGI, the 16" is a M4 profile and comes with M4 feed ramp cuts, though it is not chrome lined. I like what I see of mine, and hope to have it all put together by the weekend.
Please remember, while the MGI barrel does have the front sight base/gas block, it DOES NOT include a barrel nut, this must be added, and you must remove the FSB to do so. While this is not a big deal, keep it in mind. One other thing I noticed is that since they use there own system for attaching the barrel (i.e. no barrel nut), and free float hand guard they do not make allowances for front handaguard cap, the FSB sits flush up against the barrel shoulder. |
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Hi, new member here. I've been lurking about for a few days and am very interested in an original Sporter 7.62x39mm. But after an extensive search I haven't been able to find what the effective range is (16" barrel using Winchester 123 gr. FMJ). Also, based on that, what would you suggest for a useful sight/optics? I'd like for this Colt to satisfy my needs as a 100 to 300 yd range/deer rifle, if possible.
By the way, I already have a cheap ammo blaster (CX4 Storm .45) so this will be for beyond that. Not really ready for the long range crowd yet either. Thanks in advance. |
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Quoted:
MGI, the 16" is a M4 profile and comes with M4 feed ramp cuts, though it is not chrome lined. I like what I see of mine, and hope to have it all put together by the weekend. Please keep in mind though, while the MGI barrel does have the front sight base/gas block, it DOES NOT include a barrel nut, this must be added, and you must remove the FSB to do so. While this is not a big deal, keep it in mind. Once other thing I noticed is that since they use there own system for attaching the barrel (i.e. no barrel nut), and free float hand guard they do not make allowances for front handaguard cap, the FSB sits flush up against the barrel shoulder. Are their barrels compatible with the piston conversion kits on the market? |
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kippjones,
I see no reason it would not be, it IS a standard barrel. It simply does not come with a barrel nut included, and it does not have the .030 or so gap that is normally between the rear of the FSB and the barrel step to make room for the front handguard cap. |
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I would be mating it to a DPMS upper. Will that work or does it require the MGI upper?
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Welcome Munchausen! Some 16 inch barrel users, are reporting 1 to 3 inch groups at 100 yards, using commercial ammo, military surplus, and hand loads.
Krochus on this forum, has taken a deer close to 300 yards. He said, he used a 20 inch barrel and handloads. I am not sure about the optics. You may have to go back several pages on the variant section to find more ar15 (7.62x39) information. This is where, I learned, what works and does'nt. Good luck. |
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The DPMS upper will work fine, any decent quality upper will work.
The system MGI has is a cam locking system that uses the only the barrel extension to hold the barrel in place. A normal barrel setup uses the barrel nut to lock the barrel extension into the upper, this is the reason you will need to add the barrel nut. Same setup (minus nut) with barrel, it is their MGI UPPER that is different. MGI System |
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Y'all have to slow down a minute. I just learned of the 5.45 uppers today, and now the MGI upper & lowers. I need a minute to take it all in... I went from looking for an inexpensive way to take advantage of combloc ammo, to a $3K AR system! I think the AK upper with Cproducts mag. It's like a 300 whisper, but with CHEAP ammo alternatives!
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Quoted:
The DPMS upper will work fine, any decent quality upper will work. The system MGI has is a cam locking system that uses the only the barrel extension to hold the barrel in place. A normal barrel setup uses the barrel nut to lock the barrel extension into the upper, this is the reason you will need to add the barrel nut. Same setup (minus nut) with barrel, it is their MGI UPPER that is different. MGI System What if I do not want to use the MGI system but just want their barrel. Can I just use their barrel and install like a normal AR barrel without the quick release and use the regular nut? |
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From MGI's 7.62x39 barrel page:
These 7.62x39 barrels were specifically built for use in the MGI Modular weapon system. However, they are standard barrels and can be mated with any standard upper as well as MGI's QCB upper receiver.
ETA - That ought to be a pretty nice gun there, malsikcuf. |
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