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Interesting thread. Does anyone know definitively what the port size is on an SR15?
Thanks for all your replies and patience.
That storm had me busy at work.
I'll not be giving out manufacturers names because I'm sure it doesn't matter relating to my functioning problem(s).
I've got parts swapping to do at the range first between known reliable stuff and the stuff on my newest creation to trouble-shoot specific parts and assemblies.
I'll be trying a piece of flexible vinyl tube tightly fit over the end the gas tubes of both the known good rifle and the new problem child and giving them a good puff and comparing how air moves through them.
I was hoping someone had a quick solid number--??? of an inch diameter gas-port-- gave the best all-around functioning with most civilian ammo out of a 16" carbine.
I promise to keep you guys updated, it's just that I'm a bit busy.
Last edited by cheeta; 01-13-11 at 19:02. Reason: Edit to add:
Leave the gas port as is. I highly doubt that's the cause of your problems. As suggested above, check your gas key. Most importantly for now, since you mentioned thatthis is a stripped barrel build, check the alignment of your gas block.
When you have the time, give us a complete breakdown of the entire build.
Owner/Instructor at Semper Paratus Arms
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Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com
No one is being uptight about it. All that is being said is that not all AR part manufacturers are the same. If you tell us what you used we may be able to help you pin down a part by a problematic manufacturer.
I've done it. I cheaped out on my build at first with a blackthorne complete upper. Ended up with issues cause at least partially by substandard parts. My upper is now completely different and built with components from quality companies and it runs like a champ.
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