Sir:- Let's try to sort the wheat from the chaff here.....1. The Home Guards were Commercial; not Military,so weren't reamed out for out-of-spec ammo.2.The rear sight is original with the small aperature- they all started out that way, but most were bored out by Military.3.Early MkIII's used the same buttplate as the 1912 Cadet.4.All the HG's I've owned or seen used the early stamped nosecap, as the MkIII Mils up to late 1915.5.The bolt "urban myth"-only if bubba got near it before you do you need to be concerned- all you need to do is look at the bolt-head when it's retracted-if the gas vent is up, it's correct.6. A few years ago, I loaned original stocks for 1912 Cadet, MkII***, MkIII(late) and M-10 Commercial to a stock guy in Dushore, PA to make patterns. If he's still in business, likely a replacement walnut stock for a Home Guard would make sense, unlike a Military- only the HG stamps went into the stock.