Dedicated Suppressed AR vs. Standard AR Suppressed Results

[Magic_Salad0892]

Did you not open the port up on the 10.3"? I think it's a mistake not to in my opinion.

I think for a dedicated suppressed gun, opening up the port would ruin it's purpose.

IMHO, for a dedicated suppressor host .056''/8'' is perfect, for a SEMI-dedicated host .062'' would be better.

I need to break my other rifles in a little more so the ports erode a bit. Or I might just have 'em opened up a little.

[markm]

Also, IG, what do you mean when you say that the A5 isn't for everyone?

I'll echo Gunz. The A5 requires a little more money to buy the RE and Buffer/spring. But a simple heavier buffer can help most guys in the short run.

On a defense gun you want to run well over the long haul... a rifle buffer or A5 is the way to go.

[Eurodriver]

Well I will not be shooting the other two ARs suppressed very often, so I think I will go the H3 route. For the price of 2 A5 assemblies I can get another flashlight.

I am not ruling anything out yet though.

[Clint]

I thought that the correct port size for a 14.5" or 16" barrel on a carbine gas system was .061" and .063" respectively, how is it that the cut down DD barrel has a .058" gas port? Or am I not understanding something?

Put it this way:

Given a 14.5" barrel with a certain port size, the same port with a 16" barrel will deliver more gas.

To keep the total gas delivery the same, the 16" should have a smaller port.

If a .0625" port is optimum for a 14.5" barrel, something smaller like .060" will be optimum for a 16".

[MikeCLeonard]

Great post Euro!

I've been interested in doing a similar project for quite some time now. I really like the idea...but I'm still a little concerned I would run into issues unless I was running full-powered Ammo and the suppressor all the time. My plan was to only cut to 11.5", use the A5, and the enhanced carrier though. It was my line of thinking that this would allow me more leeway for running unsuppressed, and .223 powered loads.

I'd be very curious to see how an A5 buffer system and LMT enhanced carrier would factor into your dedicated upper's performance.

[C4IGrant]

I wonder if the LMT Enhanced Carrier (not bolt) would do anything to bleed off the gas?

Also, IG, what do you mean when you say that the A5 isn't for everyone?

Yes, it will bleed off some I think.



C4

[Ironman8]

Yes, it will bleed off some I think.



C4

I'm thinking of a similar build as his (12.5" suppressed with standard GP size) and was wondering if the LMT Enhanced carrier + Vltor A5 would make it a much smoother shooting gun without sacrificing reliability?

[C4IGrant]

I'm thinking of a similar build as his (12.5" suppressed with standard GP size) and was wondering if the LMT Enhanced carrier + Vltor A5 would make it a much smoother shooting gun without sacrificing reliability?

It certainly wouldn't hurt, but would NOT be the same as using a Noveske SB or a dedicated (suppressed) barrel.



C4

[Ironman8]

It certainly wouldn't hurt, but would NOT be the same as using a Noveske SB or a dedicated (suppressed) barrel.



C4

Gotcha. Didn't think it would, but I wouldn't want to go dedicated on the 12.5" anyway. I've decided on the Ops Suppressors, and I hear they don't cause as much backpressure as end mount suppressors...don't know if that's true or not?

[Clint]

As an alternative to a dedicated upper, what about a dedicated suppressed BCG to go along with the suppressor?

The special BCG would offset the increase in gas drive caused by the suppressor.

The combination of the special BGC and suppressor would be able to drop into most standard uppers and retain the same cyclic rate.