Changing Mk1 buttstock for Mk4

[scoobsean]

Is that a complete new section of body? I'm looking at the distinct vertical ridge down from the mag catch axis pin. The original INGLIS/date would be on a surface level with the BREN Mk2 marking

Quite possibly. These receivers come into the USA butchered into 4 pieces with diagonal cuts through all the vital parts. The rebuild guys weld up the gaps and might have to use multiple kits or make new areas too. I admire the time and skill involved. I bought this gun via auction, so don't know the history of the rebuild.

[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.

[Brit plumber]

Really this would have been better being marked as an L4A3 rather than an L4A4!

[scoobsean]

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.

How difficult was it to replace the flash hider with the MAG 58 one?

[Lee Enfield]

How difficult was it to replace the flash hider with the MAG 58 one?

Thread Pitch - Anyone know????

[Peter Laidler]

From that earmarked thread and my experience I;d say it was 60 degree metric over a diameter. Get a bit of wood and screw it into the hole to establish the pitch and then turn said pitch and angle onto a bit of slave alloy until you get it right. Then start cutting for real. Done it a zillion times..........

[scoobsean]

Well, I fitted the new buttstock and mk1 bipod. Everything seems to work okay when dry firing. I'll probably not mess with the flash hider, as I don't have any metal working tools.
I just need to get a mk2 carry handle and plate, but I am okay with the mk1 handle for now.
I can take some photos and post them if anyone is interested

[scoobsean]

This is what my Historic Arms "L4" Bren looks like now I have changed the bipod and buttstock. Thanks to you all for the information and advice so far!
Attachment 64678Attachment 64679

[Vincent]

It looks very nice.

[scoobsean]

Thanks Vincent.