I haven't popped the FSB to check the exact port size yet...
But if an 11.5 is overgassed somewhat... would a cut down to 10.5 or 10.3 bring it around???
Is there enough difference in the two lengths to tame the beast?
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I haven't popped the FSB to check the exact port size yet...
But if an 11.5 is overgassed somewhat... would a cut down to 10.5 or 10.3 bring it around???
Is there enough difference in the two lengths to tame the beast?
Not sure exactly, but I had ADCO cut a 12.5" to 11.5" and they said there was no need to alter the gas port. I guess your results will depend on the severity of how overgassed it is to begin with. If you're running a suppressor on it.....fuggetaboutit.
I suggest looking into the SYRAC Ordnance Adj. Gas Block. I put one on my 11.5" to tame the gas with the suppressor installed. Works great! Might be cheaper than cutting down the barrel too.
Yeah... no way on the suppressor. I never run cans on my shorties.
I'd hate to lose the FIXED FSB, but that is an interesting option to keep in mind.
Ah, yeah missed the part about it being a FSB. Well if you ever want a longer rail, then that would be an option. Look up port sizes for 10.5" and 11.5" and see what kind of difference there are in spec sizes. There may be a greater difference between 10.5 and 11.5" vs. 11.5" and 12.5".Quote:
Originally Posted by markm
Also, you could just run a heavier buffer...or A5 (if you're not already)...or LMT Enhanced Carrier...but like I've said before, all these things are really just bandaids for an overgassed system.
I agree on the bandaids analogy. I'll have to take off the FSB tonight to see if I'm even barking up the right tree.Quote:
Originally Posted by Ironman8
What about drilling out and threading a set screw in the FSB to function as a dam of sorts.
However big you want the gas port to be, drill that size in the set screw. Tap and screw the set screw into the underside of the FSB.
This would, more or less, function the same as the Syrac w/o the adjustable feature. Well, you could adjust it but it would require the removal of the FSB.
You may have to look at McMaster Carr or the like to find a set screw short enough. In reality, it doesn't have to be a set screw, just something to restrict the gas flow at the FSB.
Cutting the barrel down a full inch is about the same as changing the GP size from say .060 to .058 IMHO.Quote:
Originally Posted by markm
C4
Doesn't sound like much of a gain.. (reduction)
Maybe I can get Iraqgunz to stop by the house today when he's out running his ponzi schemes throughout the city.
I can pull that sucker apart, but really don't have a good way to measure.
It isn't, but dwell time does add more pressure for sure.Quote:
Originally Posted by markm
C4
True... might be worth a cutdown just for the research value.