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re: Official AR-15 thread

Posted on 4/12/21 at 6:58 pm to
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28521 posts
Posted on 4/12/21 at 6:58 pm to
quote:

I just picked up a Bear Creek Arsenal 7.62 full upper, first time out was a fail.

Pull the BCG and fit a case in the bolt and see how it fits and see if the extractor grabs the rim of the case

Report back.
Posted by Scoob
Near Exxon
Member since Jun 2009
23302 posts
Posted on 4/12/21 at 11:12 pm to
quote:

Pull the BCG and fit a case in the bolt and see how it fits and see if the extractor grabs the rim of the case

Report back.
Not hardly a bite.

I get the impression I sheared the extractor tooth off, leaving just a small lip. But then, what I can find online, it still looks about like it should for that caliber...

I took the extractor off, it had a spring and buffer, but no o-ring. I made a homemade o-ring just to test with more tension, still barely grabbed the case rim, not enough to hold and pull it out, reassembled, trying to hand-cycle.

Would a standard 5.56 extractor work, in a pinch? I'm having trouble locating 7.62 extractors, all OOS.

edited to add- in looking at my 556 extractor and just comparing the two (without swapping), I really think I sheared the head of the 7.62 extractor off (or it came funky). If I sheared it, it happened on the first shot.
This post was edited on 4/12/21 at 11:14 pm
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28521 posts
Posted on 4/13/21 at 11:08 am to
quote:

Would a standard 5.56 extractor work, in a pinch? I'm having trouble locating 7.62 extractors, all OOS.


I'm not sure.

You could expand your search to include 6.5 grendel as they share the same bolt
Posted by Scoob
Near Exxon
Member since Jun 2009
23302 posts
Posted on 4/13/21 at 11:21 am to
quote:

quote:

Would a standard 5.56 extractor work, in a pinch? I'm having trouble locating 7.62 extractors, all OOS.



I'm not sure.

You could expand your search to include 6.5 grendel as they share the same bolt


Poking around ar15.com, there's a number of people who say they work (and others who say 'use the right one').
Seems the early ones used standards; which might mean they don't work all that great (why design a different one later if that worked?).

I have a couple on the way, the standards cost about half what the 7,62/6.5 does. I can try it for function at least, it should hand cycle I'd think, and then I'd have spares for my 5.56.

Expanding the search to Grendel, I've come across a couple, will wait to see. The recommended brand seems to be Kak, parkerized. The consensus on those seem to say that the nitride ones might be too hardened and slim, causing them to break.

Plus side is I'm now very comfortable removing extractors (something I didn't like to do with other guns); on the down side I'm bummed/irritated that this hasn't worked as hoped for.

I'd have considered an RMA or something, but with the way the world is right now, I figure better hold onto it while the government decides what they are doing.
Posted by Scoob
Near Exxon
Member since Jun 2009
23302 posts
Posted on 4/17/21 at 1:09 pm to
Update- I got some cheap/inexpensive 5.56 extractors in today.

Just briefly eyeballing, I can already see these have more substance at the business end than the current 7.62 one did. the actual slot catching the rim, the width, is very comparable... but the new extractors have a bit longer tooth.
My original MUST have sheared the tip.

Swapped out and the new one fits fine. Test one, hand-cycle, no problems at all. Forcefully grabs and extracts the case, throws it out. I did this with both Barnaul and Wolf, haven't tried Tula yet.

Absolutely no sense of anything hanging up, at least by hand.
I'll bring it out to the range shortly, see if it runs with live fire. But my initial observation is, this should work fine.
Posted by elprez00
Hammond, LA
Member since Sep 2011
31474 posts
Posted on 4/17/21 at 7:58 pm to
So I’ve pretty much decided I’m now in the market. I was going to buy a new shotgun but I figure those will be readily available later this year whereas ARs might not. I’m a fan of Springfield Armory weapons, any reviews of the Saint series?
Posted by RustedToyota
USA
Member since Jan 2021
113 posts
Posted on 4/18/21 at 8:59 am to
quote:

Thoughts on .22 adapter


Tried the .22 adapter and didn't like the results. Not real accurate. .556 Bore size is not for .22 rimfire and the higher twist rate tends to lead the barrel after not to many rounds. Bought a .22LR barrel that came with a collar that you install to replace the chamber adapter on the drop in assembly. I built a stand alone complete upper. This works pretty well but still had problems with light primer strikes and jamming. Online I found a part that you install into the buffer tube in front of the buffer, it's plastic with the front tapered to a point-it pushes your adapter assembly forward toward the chamber. Solved all the problems-no more light primer strikes and made it quite reliable. I think CMMG makes a complete .22LR upper.
Posted by Scoob
Near Exxon
Member since Jun 2009
23302 posts
Posted on 4/18/21 at 4:19 pm to
quote:

Update- I got some cheap/inexpensive 5.56 extractors in today.

Just briefly eyeballing, I can already see these have more substance at the business end than the current 7.62 one did. the actual slot catching the rim, the width, is very comparable... but the new extractors have a bit longer tooth.
My original MUST have sheared the tip.
quote:

I'll bring it out to the range shortly, see if it runs with live fire. But my initial observation is, this should work fine.

Range report-

Extraction issues have been resolved. Gun ran great.

Ammo- Wolf was about 70% ignition, although I would hesitate to call it 'light strikes'. Pretty noticeable and deep hits on the primer.
Barnaul was 100%.

I forgot...
Red X Arms has the 'enhanced' firing pin for $11 shipped. I went ahead and ordered one, but hadn't swapped it out yet. Kinda forgot about it, since my first time I was getting 100% fire, with no extraction. It does seem to pop out a bit more, hopefully that addresses the Wolf issue.

I have the C Products 10 rd mags, those were GTG.
This post was edited on 4/18/21 at 6:58 pm
Posted by Jack Ruby
Member since Apr 2014
27095 posts
Posted on 4/18/21 at 4:51 pm to
quote:

 a fan of Springfield Armory weapons, any reviews of the Saint series?


Honest Outlaw on YT hates the Saint. LINK
This post was edited on 9/10/21 at 1:44 pm
Posted by thejudge
Westlake, LA
Member since Sep 2009
15151 posts
Posted on 4/18/21 at 9:50 pm to
quote:

Red X Arms has the 'enhanced' firing pin for $11 shipped. I went ahead and ordered one, but hadn't swapped it out yet. Kinda forgot about it, since my first time I was getting 100% fire, with no extraction. It does seem to pop out a bit more, hopefully that addresses the Wolf issue.

I have the C Products 10 rd mags, those were GTG.


Can you link the extractors? I picked up some spare bolts to have but am Cyprus on the extractors. I'm on a email list for a company making hardened ones. Haven't had an issue yet. Just like to flesh these things out.

Enhanced firing pin and extra per hammer spring in both my guns and never a fail to fire with wolf.

C products mags are great. Not a single issue with them.
Posted by hall59tiger
Member since Oct 2013
3022 posts
Posted on 4/19/21 at 8:31 pm to
Has anyone shot the DDM4 V7P in 5.56? I played with the MK18 in interstate guns the other day but I would be interested in the MLOK version. For those that have shot it, how is the recoil/felt gas?
This post was edited on 4/19/21 at 9:09 pm
Posted by Scoob
Near Exxon
Member since Jun 2009
23302 posts
Posted on 4/19/21 at 8:45 pm to
quote:

Can you link the extractors? I picked up some spare bolts to have but am Cyprus on the extractors. I'm on a email list for a company making hardened ones. Haven't had an issue yet. Just like to flesh these things out.

I can, just keep in mind these are standard 5.56 extractors, not made for 7.62/6.5 Grendel (those seem to be the same).

Some folks on ar15.com say "you should use the correct extractors", others have said standard work, and they did for me. I figure for the price differential, I'd give it a try.
LINK
I see they're out of stock now.
Posted by LoneStarTiger
Lone Star State
Member since Aug 2004
16486 posts
Posted on 4/20/21 at 8:05 am to
Hey guys, I'm extremely green when it comes to ARs, so be gentle. I just have a quick, simple question. I'm looking at making a trade to get my first AR and have an offer on a DPMS Panther. I haven't had a lot of time to look in to them yet but a quick google search comes up with quite a few negative reviews and comments on forums, but also a lot of "it's a good starter" comments.

I'd like to get some thoughts from the OB crew.
Posted by LoneStarTiger
Lone Star State
Member since Aug 2004
16486 posts
Posted on 4/20/21 at 8:29 am to
My other option is to sell instead of trading and build a gun.

Are parts stupid hard to come by and over priced like everything else gun related right now?
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28521 posts
Posted on 4/20/21 at 9:46 am to
quote:

Are parts stupid hard to come by and over priced like everything else gun related right now?



to your DPMS question. They are not top of the line by any stretch but I have a couple of guns built off DPMS lower. They run just fine.

Parts are mostly easy to find but are not cheap at all.

The BCG has been hard to find as are barrels. I have a few in the process right now. One I just bought a completed upper. The price was as good or better than I could have bought the components.
Posted by Santiago_Dunbar
Atlanta, GA
Member since Feb 2021
298 posts
Posted on 4/20/21 at 10:00 am to
Is there any reason why .223 would jam/fail to eject in a 5.56 upper? Maybe the .223 cartridge doesn’t have enough juice to fully cycle the bolt?

I know conventional wisdom is that you shouldn’t run 5.56 in a .223 upper but that it’s fine the other way around.
Posted by HeadSlash
TEAM LIVE BADASS - St. GEORGE
Member since Aug 2006
55614 posts
Posted on 4/20/21 at 11:19 am to
What you boys think?
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28521 posts
Posted on 4/20/21 at 11:29 am to
quote:

Is there any reason why .223 would jam/fail to eject in a 5.56 upper? Maybe the .223 cartridge doesn’t have enough juice to fully cycle the bolt?


Does the gun have an adjustable gas block?

the 5.56 is a higher pressure round but unless there is an adjustable gas block that is almost closed a .223 should function just fine.
Posted by bbvdd
Memphis, TN
Member since Jun 2009
28521 posts
Posted on 4/20/21 at 11:30 am to
quote:

What you boys think?


That looks like it may have a giggle switch...
Posted by Santiago_Dunbar
Atlanta, GA
Member since Feb 2021
298 posts
Posted on 4/20/21 at 11:42 am to
I don’t believe so. This is a Colt Match Target HBAR with .223 stamped on the lower. It’s carbine length and it looks like someone swapped the heavy barrel for a 5.56 barrel.

Runs and spits out 5.56 no problem, just has trouble with any kind of .223, which unfortunately is what I’m sitting on a lot of haha
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