This is a stand-to for an incoming competition, one of our most expensive yet.
Later this week we're going to be offering the opportunity to Win £270 Rab Neutrino Pro military down jacket
Visit the thread at that link above and Watch it to be notified as soon as the competition goes live
Photos of 41 Cdo around the time of the Chosin Reservoir battles show them fully equipped as per the USMC, ie with US helmet as well. Since this was mid-winter, they are rarely pictured with steel helmets, rather they are swathed in whatever protective clothing they could scrounge. Many photos purporting to be 41 Cdo show them with a mix of UK & US kit and weaponry - e.g. Garands and Lee Enfield No4s in the same picture. It is likely that they were re-equipped after Chosin with standard UK stuff, but that they continued to retain the favoured bits of US equipment.