01-06-2020, 01:32 AM
Might as well put in my .2 cents 
Alot of great suggestions already, and honestly, hard to make a bad decision lately. Great time to be alive.
Been seriously looking at Vseven's Hyper-Light 15" rail (HYPLIGHT 15ML) for an upcoming rifle length gas build for the wife, crazy lightweight for not a whole lot of extra cheddar. Since you are gonna be rocking a 22" and humping over terrain I would highly suggest watching your oz's like a hawk. You are going to get great velocity out of a grendel with a 22". Would love to see what FPS you end up getting after your build is complete.
FYI I have used:
Giessele MK4 rail 9.5" 11.0oz (built like a tank and fantastic barrel nut)
Midwest Industries Ultra Lightweight series 12.625" 7.9oz , really fantastic as well and very lightweight per inch of rail. I was going to go with the 15" but decided on the 12.625" since my 18" faxon was just a midlength gas and no sense of humping around meaningless weight.
Rifle length gas tubes are ~ 13" so a 15" rail should be adequate for your needs I would imagine.
Random thought, what glass will you be parking on it?
Alot of great suggestions already, and honestly, hard to make a bad decision lately. Great time to be alive.
Been seriously looking at Vseven's Hyper-Light 15" rail (HYPLIGHT 15ML) for an upcoming rifle length gas build for the wife, crazy lightweight for not a whole lot of extra cheddar. Since you are gonna be rocking a 22" and humping over terrain I would highly suggest watching your oz's like a hawk. You are going to get great velocity out of a grendel with a 22". Would love to see what FPS you end up getting after your build is complete.
FYI I have used:
Giessele MK4 rail 9.5" 11.0oz (built like a tank and fantastic barrel nut)
Midwest Industries Ultra Lightweight series 12.625" 7.9oz , really fantastic as well and very lightweight per inch of rail. I was going to go with the 15" but decided on the 12.625" since my 18" faxon was just a midlength gas and no sense of humping around meaningless weight.
Rifle length gas tubes are ~ 13" so a 15" rail should be adequate for your needs I would imagine.
Random thought, what glass will you be parking on it?