>>64272225
DI is for larperator toys. Really smooth to shoot, softer recoil despite lower mass.
But if you want your warfighting weapon to work reliably in adverse conditions including your picrelated (arctic), it's gotta have a piston.

However the new Finnish NATO-compatible service rifle comes in both DI and piston variants.
Sako turned the sloppy & loose AK platform into a veritable marksman's rifle, maybe they can make a reliable DI AR too.