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+--- Thread: Gas port size (/showthread.php?tid=9730)
Gas port size - martkin64 - 08-18-2015
What is the minimum and maximum gas port size for the AR15 Grendel? and what is everybody drilling theirs out too?
Gas port size - ricsmall - 08-19-2015
Depends on gas length and length of barrel. On my gun, 22" rifle length, I enlarged mine to .0945. Works great. There were several threads some years back if they're still available. Lr52 has extensive knowledge on this.
Richard
Gas port size - martkin64 - 08-19-2015
ricsmall Wrote:Depends on gas length and length of barrel. On my gun, 22" rifle length, I enlarged mine to .0945. Works great. There were several threads some years back if they're still available. Lr52 has extensive knowledge on this.
Richard
Thank you Ricsmall...
Gas port size - martkin64 - 08-19-2015
I have a 20 inch barrel...I was having feeding problems early on with my new Grendel.... I had the local gunsmith open up the Gas port to solve to problem. They stepped it up in small increments till the feeding issues went away and it was locking to the rear every time... But they went to .103 gas port size... It seems a bit big but it works great and I have not seen any sighn of over gas issues at all.... Is that a bit big?
Gas port size - LRRPF52 - 08-19-2015
MLGS 16" start at .078"
MLGS 18" start at .076"
RLGS start at .094"
If you seal the gas block to the journal, and seal the tube to the block, you can get better gas pressure with smaller ports.
Gas port size - martkin64 - 08-19-2015
So is mine way over sized?
Gas port size - LRRPF52 - 08-19-2015
What bolt carrier, buffer, and recoil spring are you using?
Gas port size - martkin64 - 08-19-2015
LRRPF52 Wrote:What bolt carrier, buffer, and recoil spring are you using?
The BCG is from Dead shot barrels. . (NB) the buffer is just a dpms AR 15 buffer and sprung......
Gas port size - burnsome - 10-03-2015
Any info/recommendations for SBR Grendels? Specifically looking for 12 inch barrels if there's any info on that barrel length