You have increase the bore of the barrel gas port/vent. I think its out to 1.9mm but I’ve yet to have it done. That is the diameter I believe a regular 14.5/16” gas block needs on a 10.4” barrel. I assume that’s what you would use for the AGB as well. YMMV.Maybe a stupid question. Can you use a 14-16 AGB on a 10.4 barrel?
Any issues? Modifications needed?
No OEM barrels have a port size of 1.9mm. IT says that is what works with a 14.5”/16” gas block on a 10.4” barrel.That’s all great in theory, and you have a lot of them, but there’s no facts there. Maybe you could start by posting the valve sizes for the long barrel AGBs? Or even which HK barrel has a 1.9mm port? Or for that matter, any facts at all??
I know, you’re always right regardless. You suggested a 1.9mm gas port for a long barrel AGB without even knowing the port sizes, WTF?!?
Carry on, it’s all yours.
Rereading your post, I actually understand what you are saying.Sure, some facts:
IT has no experience with the long barrel AGB. IT shortened a MR and when it wouldn’t run, enlarged the barrel gas port to 1.9mm to get it to run. Not surprising from someone familiar with ARs and not familiar with HKs. Hk does NOT do this, they use the same size barrel gas port and adjust the gas block vent accordingly. If IT was “smaat”, he would have welded the gas block port and drilled it to 1mm. This is what Hk did going from no gas block vent to 1mm on the 10” guns.
I, on the other hand, do have personal experience with the long barrel AGB. I purchased one, just like anyone can from vendors like Hkspecialist or Hurricane Butterfly. I posted the valve and vent sizes above. From both vendors I mentioned, they’re specifically advertised as long barrel AGBs, they’re NOT for the 10” guns. They’re $299 and in stock at both locations.
So, IT, who has no experience with the AGB claims that I somehow got a 10” version instead. IT further speculates what valve and port sizes must be on the long barrel AGB by assuming it’s the same as the non-adjustable long barrel gas block. Worse, IT makes barrel gas port size suggestions to others based on this speculation. This is isn’t “smaat”, it’s dumb. I realize IT has a huge superiority complex, chooses the baffle ‘em with bull**** approach, likes to talk down to others, and thinks that his non adjustable gas block is somehow optimized for both suppressed and unsuppressed, which isn’t possible, but making suggestions to others based on his assumptions is not only dumb, it is also irresponsible!
Is it possible that I somehow got a 10” AGB instead, I suppose, but it certainly doesn’t make any of this any better! In the meantime, I’ll wait for IT to post the valve and vent sizes for the long barrel AGB.
Why don’t you buy a long barrel AGB like I did and clear all this up for everyone? Hopefully, they won’t send you the 10” by mistake!
Yes, there are 2 different versions. The one for the 10.4” barrel has a 1mm vent, and the adjustable regulator has a 1.6mm port for unsuppressed shooting and a 1.4mm port for suppressed shooting. The 14.5”/16” barrel version has a 1.5mm vent, and the adjustable regulator has a 1.4mm port for unsuppressed shooting, and a 1.2mm port for suppressed shooting.Can anyone actually say for certain there are different versions of the non-A5 AGBs for different barrel lengths?