Recent content by TonyAngel

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    AR suppressor problem

    Just to be clear, the bottomline is that the closed bolt lock time needs to be increased. You can do this by either turning down the gas with an adjustable gas block or a heavier buffer. In some situations, an adjustable gas block is necessary. A heavier spring can help with bolt velocity, but...
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    AR suppressor problem

    I see problems with x39 rigs pretty often. 7.62x39 barrels that I've seen tend to be over gassed as it is, and then you're compounding things by adding the suppressor. It's kind of hard to accommodate the broad range of quality in 7.62x39 ammo, so manufacturers tend to err on the side of...
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    Suppressors Mount or direct thread?

    Yup. I'm thinking I still need one for my 9mm PCC, my 300BO and a rimfire. At least they'll be cheaper than the optics on the rigs they're going on. I, at first, had it in my head that I was going to use something like a YHM R9 to pull double duty on my 9mm and 300BO, but now am thinking...
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    Suppressors Mount or direct thread?

    I got to go put my hands on MY first suppressor today. Just waiting for the all clear from the ATF now. I took a close look at the srx adapter and mount and it looks like there isnt going to be much of a difference between the srx and DT in terms of length. Just a couple of ounces in weight. I...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    I agree with this. A vast majority of gassing problems are likely user induced. Too much buffer and/or too much spring. For all of those guys out there that treat the AR platform as though they are playing with tinker toys, it's really handy to have a set of pin gauges. To say that you've...
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    Badlands "Shell Shock" 5.56 - snake oil?

    That statement reminded me of something. When I was first looking at the 53gr Black Arc ammo, I wondered why they went with the 53gr vs the 55. The bit of research I did showed that the 53gr has the highest BC (that I could find) of any 50ish grain projectile. Arguably speed and BC for its...
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    Badlands "Shell Shock" 5.56 - snake oil?

    I just went through my notes from the range day when I was playing around with the Black Arc stuff. With the 11.5, I get 2750 fps out of M193 and similarly loaded rounds. I got 2900 out of the 53gr Black Arc. My notes tell me that the velocity gain is marginal. Not enough to make a real...
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    Badlands "Shell Shock" 5.56 - snake oil?

    I've only had the opportunity to fire a handful of the 80 something grain badlands rounds and wasn't able to chrony it, but it shot accurately out of my 16" Criterion. I have played around with the Black Arc stuff though. I tend to relegate ammunition to certain rigs that I use for certain...
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    300 Blackout AR Malfunctions

    This doesn't necessarily mean that the gas block isn't working. It seems the OP has an undergassing issue. This is likely compounded by the presence of the AGB. AGBs leak. For purposes of diagnosing the problem, just leave the AGB at its wide open setting. Aero AGBs aren't the best, but they do...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    I don't know if you are aware, but the o-ring is a mil-spec thing. Whether in an AR15 or AR10ish setup, I've never known it to cause a problem. With the proper spring and insert, the o-ring becomes unnecessary, but not an impediment to proper operation. Personally, if my bolt was extracting...
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    Criterion barrel brass pressure signs

    This is an older thread, but keep in mind that you could have problems no matter what you get. Everyone turns out a turd once in a while. Criterion makes good barrels. In that price range, you should also check out the offerings from Geissele as well. What matter is that the manufacturer stands...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    This thread is a prime example of the complexities that come along with running a gas gun and many of those complexities are often over simplified. Can an overgassing situation cause feeding and ejection malfunctions? I think so. Over gassing causes excessive bolt velocity, but I think the more...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    You're right. I knew I left a step out when I punched it into the keyboard. If I had the math, I'd be one designing the stuff that others would be trying to figure out. Still, I think that the gist of what I was saying holds. The velocity of the BCG on the forward stroke is affected by the...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    No, you're right. Gas volume, buffer weight and spring rate are the topics of many discussions. Those discussions often start with ... " so, I built this AR and ....." I honestly believe that the topics of buffer weight and spring rate come up so often because people like to tinker and for many...
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    "Over Gassed" AR's Fact or Fiction? Other Perspectives

    I don't know that I've had the occasion to assemble or diagnose that many ARs in my lifetime, but I don't think I agree. Energy is equal to mass x velocity. Every action produces a reaction. The faster the bolt carrier is moving when it hits the bottom of the buffer tube, the faster it will be...
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