Changing Mk1 buttstock for Mk4

[WallyG.]

The gun being discussed is a typical Historic Arms build... He uses gusset plates and weld to reinforce the mag well walls when reassembling the cut receiver... which makes for a readily identifiable new profile for outer surface of the receiver walls... the split in the slide in front of the trigger guard is also a tell for a HA build. And as Vincent has pointed out in previous posts and is again pictured here... the left side locating key is mostly milled away on the gas piston/bolt carrier. The faux riveted on mag lip support is cosmetic and is not an actual modification part... and like the re-lettering has been applied to give a look a like effect for this build. FYI... I have two made this way... but I had the SA flash hider replaced with one from a MAG58 and it does a good bit to make the whole effect much more like an original conversion's barrel - but I did not pay to have the .303 barrel profile turned down to the .308 outer dimensions.