I am wondering if functioning issues will substantially increase with a 7.5" AR15. In the past I heard rumors of anything under 10" being a real hassle, but without substantiation.
http://noveskerifleworks.com/imimg/75-556_2d.jpg
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I am wondering if functioning issues will substantially increase with a 7.5" AR15. In the past I heard rumors of anything under 10" being a real hassle, but without substantiation.
http://noveskerifleworks.com/imimg/75-556_2d.jpg
It's been beat to death. In my opinion, it's harder to find the right combination of buffer, spring and gas port to make them run, but after you've found it you should be good to go. Inspection of parts for wear should be escalated for a micro AR, but I would not call them finicky. Mine has eaten everything 50 gr to 62 gr I have fed it, but I do not feed it really low pressure stuff like wolf. American Eagle, Prvi, Black Hills, WWB all work fine for me. Accuracy with irons will be less due to the shorter sight plane, but me and my eotech can stay on a torso at 100 yards easily.
http://i110.photobucket.com/albums/n...0004085613.jpg
So far, mine function reliably all the time. not even a single malfunction was experienced since it was built. estimated round count is around 2k. I even ran it suppressed.
i would do extensive reliability testing before putting one in a duty/defense roll, and i would only trust one built by a known-righteous company like NRW. or myself.. but only because i've got the time and money to fiddle with it if it doesn't run on the first/second/third/fourth/etc tries.
thats a pretty sweet lookin little blaster..
I wouldn't touch anything under 10.3''.
Reliability, ballistics, parts, etc.
I don't like the micro AR platform.
I have a Noveske 7.5" Diplomat (as in your pic) but in 6.8. I've only fired 40 rounds (6.8's about $1.00 a round), but it worked flawlessly with a spike ST2 buffer.
From what I've read, don't go under 10" in 5.56 for SD use (that's why I went 6.8 for my 7.5" but I also have a Noveske 10.5" in 5.56).
For a fun gun, do anything you want.
I'm also a big believer in quality. Noveske makes quality kit and stands behind there product. You'll pay more, but you know you have something that works.
If your LEO, they'll also give you a 10% discount.
I have a 7.5" Noveske Diplomat chambered in 6.8 SPC as well. I am running a heavy ass 7 oz. Spikes ST-SST (they no longer make them) solid stainless buffer. I have about 4,500 rounds through mine with ZERO malfs. No FTE's or FTF's or stove pipes, or ride overs, etc. The 90gr TNT BTHP rounds that I am using clock at an average of 2,600 fps. more than enough (reliable fragmentation) to get the job done.
I trust mine,
MadDog :p
http://img535.imageshack.us/img535/5...iplomat001.jpg
I built my 7.5" from scratch and its true, its a pain to get it working properly. A lot of Fail-to-Feeds, some Fail-to-Fire's and the bolt wasn't held back after the last round. My remedy was a new gas key & H2 buffer.
As of now, it works like a champ! No problems at all.
If you buy directly from Noveske, you shouldn't have any problems :)
I had a 7.5" for a short time, ran it hard, wanted it to choke, and couldn't get it to.
Evidently the real short AR Gods smiled at me.
I've been running a 7.5 AR for 4+ years. My rifle has seen well over 30K rounds and runs flawless with everything I have tossed at it with the exception of wolf. I have also been known to run it suppressed but the barrel is pretty shot out now so I keep the can off of it.
My secret, it is a model 1 7.5" upper. Yea they get the worst reviews but my research at the time showed people had 100% reliability with their 7.5" setup.
http://sphotos.ak.fbcdn.net/photos-a...82991_3751.jpg
I had a DPMS KittyKat upper. I had to open the gas port. After that, it ran great.
I used an M16 B/C, BCM extractor up grade and a 9mm buffer.
I'm building another using a Rainier Ultra Match 7.5". Can't wait to get it together.
I also run a Levang comp.
i'm afraid this is entirely incorrect.. there is no manufacturer that i know of that has as firmly established record on this board for reliable un-reliability as M1S.
not even vulcan has made as many appearances on this board.
https://www.m4carbine.net/showthread.php?p=576825
https://www.m4carbine.net/showthread.php?t=31567
http://m4carbine.net/showthread.php?...ht=model+sales
https://www.m4carbine.net/showthread.php?t=25122
https://www.m4carbine.net/showthread.php?t=16978
https://www.m4carbine.net/showthread.php?t=25649
https://www.m4carbine.net/showthread.php?p=440128
https://www.m4carbine.net/showthread.php?t=4664
Why are we turning this into a M1S bash fest???????????? The OP wanted to know about the reliability of 7.5" AR's. I had a M1S upper that I used extensively for about 6 years. It ran 100% from day one with so many rounds it was time to change out the barrel. That included 1,000's of Wolf rounds. I finally replaced it with a 6.8 SPC Noveske Diplomat upper. I venture to say you hear about problems with any platform but when they run well most people don't bother to post about how great it is.
MadDog :rolleyes:
one post isn't a "bash fest." we don't let incorrect information go unchallenged on this board- since its a very well established fact that M1S guns are prone to QC issues, a statement to the contrary to this fact must be refuted. otherwise, this board ceases to be a place of reliable information.
i will have nothing further to say about M1S in this thread- if you want to debate me, PM me or start a new thread.
I prefer to use a piston operating system on anything 10.5" or shorter. I've had excellent reliability with the LWRCi 8" guns. My 6.8mm PSD has been through several carbine courses and has a total of about 3500 rounds on it without issue. I recently bought one of the 5.56mm PSDs, but it only has a couple hundred rounds on it.
Stephen
To me this is the one place a piston system excels.
Chris
If I were to use a 7.5, it would have a flash suppressor on it. By the time you put a KX3 on it, you might has well have just gotten a MK18.
http://www.youtube.com/watch?v=jj0xq637mi4
I was testing a lower a buddy recently built with my MODEL 1 7.5" upper. Thought I would share how that shitty, horribly built model one upper is still running flawlessly after tens of thousands of rounds even when suppressed and full auto.
Arguably, people don't realize that 90% of the reliability of an upper IS the BCG gas ports being the same.
Here is a link to a newer 7.5" thread that I started that's mighty damn interesting!
https://www.m4carbine.net/showthread.php?t=55382
Can somebody please tell me the utility of this short of a barrel? The only reason one needs to go that short is because of the design of the AR in the first place (the buffer is behind the carrier instead of above it, which means you can't use a folding stock).
10.5" is already loud as heck. I can only imagine how insane this would be in a vehicle - I'm sure you'd destroy your ear drums as you try to shoot out the window, unless you had a KX3 directing the blast forward, but even then it would be loud.
With the KX3, the overall weapon length with the stock retracted is about 25".
For 5.56, I would much rather run a SCAR-CQC (21" overall length with stock folded) with an M4-2000 (adding 5.1" to the length).
Much better would be an MP-5, I would think.
At times I have both back and wrist issues. I need a light gun for long demanding courses. In FEB for example I will be attending two classes within weeks of wrist surgery (most likely Ill be in a cast) so my 7.5" ar will be sweet since I will be running one handed the entire time.
Its also my HD gun. Its the shortest suppressed AR platform you will find. Yea a SCAR would be short with a stock folded but that will take away my option to shoulder the weapon. A folded stock rifle for me is only good for storage.
As for the noise, on the range it is not as bad as many would think. For HD, I run suppressed. Look two posts above for video of me running it suppressed and full-auto.
Oh, and how much damage are you causing to your suppressor baffles with that short of a barrel?
I think there needs to be a tacked thread on this forum about the 7.5" issues so we don't have to go through this bullshit every 2 weeks.
Useless is your opinion.
I have a 7.5" Rainier barrelled upper that has never missed a shot, suppressed, unsuppressed.
It's been combat accurate at 100 yards. What's useless about it?
It's still a rifle bullet traveling over 2000fps.
I use expanding ammo so I don't care about fragmentation.
Europeans have been rolling with sub 10" duty/combat guns for awhile without issue. Good examples being the SIG 553 and G36K
http://www.swissarms.ch/typo3temp/pics/1654ddb9e7.jpg
http://www.hk-usa.com/-images/produc.../lg_g36c_3.jpg
7.5" is too short for my tastes. The blast alone would be too annoying, as would be the reduced ballistics, but all the ones I have fired worked okay. Though, 10-10.5" is the magic number for me, but some people believe that is too short too despite years of service and being vetted by qualified people.
The blast is bad. Indoors it's intolerable unless running a suppressor.
A 14.5" is pretty bad unsuppressed indoors too.
I've shot it outside with a Levang and it's not too bad.
Another reason I like the Levang
My friends tell me that the Sig 552 and HK53 lay the hurt on people just fine. It has a place.
Nope, don't take me serious. There are several members here, several big name instructors, and several tens of thousands of rounds that have passed through this rifle that will vouch for the setup you are too short sighted to accept.
I think you need a drink buddy, and not the kool aid shit you are currently drinking.
Collapsed my 7.5" AR is 24 1/4" long and weighs 8# with an eotech, f&r BUIS, ASAP Plate, Suppressor Mount/FH, CTR stock, full XTM Rail Covers, and MIAD grip.
The SCAR CQC is 7# with nothing installed and 31" long collapsed. Thats almost 7" longer and probably heavier when you add the optics, BUIS, etc ...
More noteworthy, my AR is probably less then 1/2 the price and when I built her, over 4 years ago, the SCAR option was non-existent.
I try not to run it much suppressed for this reason. I really see its big pro suppressed in the home defense arena.