AR-10 Errata sheet
So i check them and nothing. I did find an interesting Errata sheet "This errata sheet provides information that isn't contained in the AR-10 Owner’s
Manual, or highlights information that is extremely important"
Should come in handy for noob like me.
This was the most complete info i found. They were using an AR-15 though and i personally do not know the difference between AR's.
"The coldest I have used military issued weapons was negative 56 degree F. (Fort Greely AK.)
M16s worked with all the lube removed, but would jam up when removed from a semi-warm M-113 A-Cav. It would eventually work again when all the metals became the same temp. Break Free becomes thick and glue-like at those temps.
Arcttic brake fluid or kerosene works well as cold temp lube.
The coldest I have used personally owned weapons was Neg 76 F at Fort Yukon Ak,
(Winter of 82-83).
My S&W m-25-5 revolver jammed rock solid when I pulled it out from under my parka. (trying to shoot a rabid dog.)
A tiny bit of petroleum based lube acted like a weld. I later cleaned it with acetone and then lubed it with silver dry graphite.
My 1911A1 did not like to fire more than a couple shots at that temp. My personal AR-15 patrol car gun did not work at 76 below, but my Finnish Valmet M-76 FS did when I dry lubed it.
Cold Weather Firearms Lube Test with a Stag AR chambered in 6.8mm SPC.
Negative 20 F.
Tetra Gun Lube.........................................Very slippery but semi thick
GS-96.......................................................Works well, semi dries.
Penn Synthetic Reel Oil P/N 92340 Very Fluid, Extremely slippery
Marvel Mystery Oil Very fluid, Very slippery
3 in 1 Oil Fairly fluid, somewhat slippery
LPS-2 Fairly Fluid, somewhat slippery
Klean-Bore Formula 3 Some separation, fairly fluid, somewhat slippery
Tri-Flow Separated, does not adhere or film on metal
Break-Free Separated, somewhat tacky and semi syrup like
Mil-Tech Thick, somewhat tacky, syrup like
Outers Gun Oil Very thick syrup. Tacky
Mil spec MIL4-46000c Lube Oil Separated, some was in thick jell state.
Rem Oil Thick jell, tacky
Boe Shield T-9 Thick Jell, tacky
Corrosion X HD Thick jell, tacky
Ballistol very thick jell. Separation
Exxon Elite 20-50 Syn Av Oil Very Thick, glue like
AeroShell 15-50 Semi Syn Av Oil Very thick, glue like"