Are those 10.5" unreliable comments directed at me? Where did I ever say anything about 10.5 reliability? Please show me.
I said they are violent and loud. I did some testing with 3 different 10.5" setups, full auto, semi, and both under highspeed camera… I wasn’t impressed with what I saw on cyclic rate, and general feel of them. None of them were what I would personally want. I told the OP my opinion, if he wants a 10.5, go for it! I’ve shot 7.5", 10.5" 11.5" 12.5" 13.7" 14.5" 16" 18" 20" and 24", of those I wouldn’t get anything longer than 16 personally or shorter than 11.5", those opinions have nothing to do with reliability so I’m not sure where that came from.
10.5 is not for me. I have a 12.5 DD barrel on my SBR that I’m digging quite a bit right now. Also newly running the A5 kit to test is out, won’t have any comments about it until I get a chance to highspeed that, looking forward to it.
Do as you please, and god forbid anyone offer free advice you don’t agree with.
I am still waiting for you to SPEC OUT your various SBR’s for us. I believe that IIRC you are using some type of adjustable gas block. I can all but guarantee that it is part of your problem based on what I saw recently with one.
Nope. I don’t own an adjustable right now. I’ve used the switchblock and LaRue’s PST before and I’m considering that W.A.R receiver but my SBR currently does not have anything but the pinned DD lo-pro. I tested a switchblock and posted the results in another thread, those are fantastic at what they do, the rail options are a killer though.
What problem do I have exactly? What are you even on about? Where do I say I have any sort of problem? I think 10.5 looks cool as shit but only has practical disadvantages over 11-12", that’s the opinion I offered.
I full auto tested 3 differently built but overall similar (well, two were really really similar) 10.5"s a few weeks ago with a photron highspeed. Didn’t like them. There was noticeable gas in the face suppressed after 5 rounds full auto, they didn’t “FEEL” as nice to me (something you’re a proponent of iirc), and I thought unsuppressed they were excessively loud, granted this was indoors but the 14.5" we used was much more pleasant. I wish I would have had my 12.5" running at the time, was waiting on the A5 kit to come in.
Anyhow this is all off topic to the OP, if you like you can start another thread about 10.5 opinions or better yet PM me and discuss it there. But I’m done getting drawn in to a thread hijack.
I should have specified THIS 10.5" looks bad ass. I’d run that setup if it could still work in a suppressor heartbeat although I would go with the 11.5" version of that.
Go back and read some of your posts. You essentially stated that in your experience the 10.5" wasn’t reliable and that you had issues with (or wouldn’t recommend a 12.5" or 13.7" middy? (whatever that is) which means you either experienced issues or you didn’t.
I have never said all 10.5" weren’t reliable, just some I used. And in this thread 10.5" reliability good or bad was mentioned by everyone BUT me.
No, I would not recommend a 13.7 or 12.5 middy to anyone for any reason. I had the 13.7", it worked but not great for a variety of reasons. Ragged edge of correct dwell and pressures for midlength gas system.
I’ve also had extremely reliable function with my LMT 10.5 inch upper. Suppressed, unsuppressed, semiauto and fullauto that sucker just RUNS provided you keep it well lubed. Mine is very smooth and is very comfortable to shoot unsuppressed if outdoors. My upper has a very conservative 3k rounds down the pipe, most of which has been with a suppressor and fullauto.
I used to have my LMT set up with a KAC RAS-II, but converted it to a Mk18 with a DD RIS-2 FDE rail. I liked that one so much that I eventually built up a Noveske N4 Mk18 upper with a black RIS-2 rail. Never fired the N4.
You really can’t go wrong with LMT, Noveske, DD, or BCM. And I am a big fan of the Mk18 RIS-2 rail. It is the perfect length for me.
As for suppressors, I own an SWR Specwar-2 and an AAC 51 tooth M4-2000. I got the AAC for a song and while I like it, I would prefer a Surefire if I had it to do all over again. Not that AAC doesn’t make a great can, just that after using both I like Surefire’s mounting/locking system better.
I’ve had 1 complete rifle (MK12 MOD1) and 2 complete uppers built by HCS. The latest one being a MK18 MOD1 (Waiting to get home to see the damn thing!!!).
Kevin and Alan do some damn amazing work!
With that being said, my first SBR was a 10.5" (Built by ADCO). This was an upper from a Colt LE6920 that was cut to 10.5". At the start I did have cycling issues. After trouble shooting and some great help from some people here, it turned out to be a gas issue. I sent the upper back to ADCO (Another good company to get work done) and had them open the GP up to .071. That cured all the problems. Prior to openig the GP (Per my request) I asked to have the GP measured. The reported measurement was .058.
