New Griffin Enhanced BCG

[BoilerUp]

I said that I got this and that the problem was already solved right?

You ended with "I am concerned with this getting the carrier stuck at a not so great time to be stuck during" which implies the problem is not yet solved. Alamo shared his experience/ideas, presumably because he's trying to be helpful. That's kind of the purpose of a forum. And Alamo is our resident over-thinker.

One thing I find interesting here is I've never ever had a carrier get "stuck". I'm inferring you mean it's stuck in the rearward position, i.e., inside the receiver extension. Do you know what (edge/surface) it's catching on? Seems weird.

[TheRifleman]

I figured it out, an out of spec extension. No more cheap purchases from no name parts. Once again I relearned that parts is not parts and that cheap is not that effective. I got it from Aim Surplus way back when and while it runs fine or so I had thought with a Microbest BCG, I did this time notice that with any BCG there was a sluggish return to battery. Hardly noticeable but we caught it in slow motion happening. Something on the Griffon's carrier design with that bulged ring on the surface of the rear of the carrier is having a more dramatic effect. When I put the same Griffon on a Geissele tube, FN tube, or a Colt tube, it works as designed. So after relearning why cheap is just a shortened name for tolerance stacking, I ordered an LMT tube for this LMT lower, and decided to try out that Vism alignment block for buffer tube installations.

[BoilerUp]

I figured it out, an out of spec extension. No more cheap purchases from no name parts. Once again I relearned that parts is not parts and that cheap is not that effective. I got it from Aim Surplus way back when and while it runs fine or so I had thought with a Microbest BCG, I did this time notice that with any BCG there was a sluggish return to battery. Hardly noticeable but we caught it in slow motion happening. Something on the Griffon's carrier design with that bulged ring on the surface of the rear of the carrier is having a more dramatic effect. When I put the same Griffon on a Geissele tube, FN tube, or a Colt tube, it works as designed. So after relearning why cheap is just a shortened name for tolerance stacking, I ordered an LMT tube for this LMT lower, and decided to try out that Vism alignment block for buffer tube installations.

Thanks for the follow-up. That makes sense that if the ID of the extension was a tad too tight it would constrict on the geometry of the Griffin carrier.

[TheRifleman]

LMT tube was installed, problem solved. Went to test the Griffon BCG out now that I had a TDP in spec tube, and I did not notice a major change but it was slightly less eye watering. I have tried a Forward Controls Design ACH, a Geissele Airborone CH, and a Daniel Defense Grip n Rip CH, and there's no difference in the amounts of gas to the face levels. Is there a superior gas busting ambidextrous CH to rule them all here or is this a lefty thing where I am overlooking the fact that the gas leaks are coming from somewhere else like the ejection port or the forward assist?I know that Geissele barrels are notorious gassy for silencer users but this one is really, really accurate which is why I am not keen on trying another barrel. Think a flow through silencer would be a better option which would solve my gas to the face issue with it?

[BoilerUp]

LMT tube was installed, problem solved. Went to test the Griffon BCG out now that I had a TDP in spec tube, and I did not notice a major change but it was slightly less eye watering. I have tried a Forward Controls Design ACH, a Geissele Airborone CH, and a Daniel Defense Grip n Rip CH, and there's no difference in the amounts of gas to the face levels. Is there a superior gas busting ambidextrous CH to rule them all here or is this a lefty thing where I am overlooking the fact that the gas leaks are coming from somewhere else like the ejection port or the forward assist?I know that Geissele barrels are notorious gassy for silencer users but this one is really, really accurate which is why I am not keen on trying another barrel. Think a flow through silencer would be a better option which would solve my gas to the face issue with it?

The Griffin SNACH might be a bit better, but I really can't imagine a CH is going to materially improve anything that overgassed.

I know my Sig SPEAR LT is super gassy but it was designed to work with a flow through can, so that is my next step. I suspect that would help you, too.

I'd probably start by getting an adjustable gas tube (Black River Tactical) or block (SLR Sentry) and try to reduce gas back to the system.

Otherwise, you're left with just adding more weight to the reciprocating mass to try to slow it down.

[TheRifleman]

I did give Riflespeed a thought of purchasing, but my Mk14 handguard is too small an inside diameter and it's 10.5 length with an 11.5 barrel doesn't give any room whatsoever unfortunately. Maybe I should list it elsewhere for sale and trade and try with something else.

[TheRifleman]

So after more fence sitting and a whole lot of deliberation, I have decided finally to wave the white flag of surrender. This week I am going to hit my local favorite class 3 shop and get a Flow through to solve the gas to my face issue. Out of curiosity I asked them by phone what was full auto rated and 11.5 safe to use for an FRT and they said Huxwrks and in stock. So that's what I shall do.

[gatordev]

A flow-through will help, but as a lefty, you're still going to get gas out of the ejection port. How much and will it matter? I don't know, that will be up to you. But it will be something more than 0.

[TheRifleman]

A flow-through will help, but as a lefty, you're still going to get gas out of the ejection port. How much and will it matter? I don't know, that will be up to you. But it will be something more than 0.

I did a whole week all day everyday of a carbine course, and not been bothered with my B&T flow RH 5.56 SC. I cannot do more than several rounds in one magazine without having to stop with this non flow Abel Biscuit. And I still get gas without a silencer, which was way more with an FRT out of a 14.7 that wasn't suppressed. I'm making it safer for me with a flow through.