Thank you. I'm curious is that a sock or USGI wool beanie strapped to the PSSR stock to make a improvised cheek riser? lol. Very MacGyver.Thanks for the post. Either Navy NSW guys, or possibly US Army Special Forces operating under USSOCOM command, given that the NSW/SEALs share weapons with SOCOM missions, which includes US Specials Forces (& Army Rangers). Those weapons were made at Crane, and I suspect they are Navy NSW guys, but that is a best guess. (Knife in first picture almost looks like a US Navy Mk 3 diving knife, but the pommel is a little different. It definitely ain't a US Army issued M9 bayonet/knife).