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Thread: Fixed up Bren Mk I

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  1. #21
    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by BurtonP View Post
    It may have been legal to convert to semi in Canadaicon (I'm not sure)
    That time is long since past. As of about 1998 they were prohib. You did the ONLY thing that you could and I think if the RCMP was asked...they'd insist on inspecting it for dewat-ness... I think if you look at the current list of firearms that were last given the death knell, a Bren gun would be there.
    Regards, Jim

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  4. #22
    Legacy Member BurtonP's Avatar
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    I suspected as much. It's DEWATed, as it has no internal moving parts; they're all welded up tight. It's not even cock & click. I'm fine with that.

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  7. #23
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    Mention of DP Brens reminds me that the biggest killer of Mk1 Brens was the inability to get CHS due to worn breech block stops and barrel bearings. And for Mk2's, that and loose gas cylinders caused by worn press-in gas cylinder area. I seem to recall that there were plans afoot during Base workshop repairs, to fit threaded Mk1 and 3 type gas cylinders while converting them to Mk2/1 folding cocking handle spec. I used to see plenty of DP Mk1's but only a few Mk2's. There were some Mk3 DP's but these and the Mk1's and 2's were all later under the new catch-all umbrella of DP Machine gun L54 A1

    The real irony of the L54 guns was that as they were not classed as firearms and virtually irreversible, plenty were sold on as inert by plenty of dealers in the early to mid 70's. A large dealer in Plymouth was a big buyer and dealer who disposed of them to whoever wanted one for his Ferret reccy vehicle

    I think I have said elsewhere that in the main, the Mk2 Brens were the mainstay of the UKicon and Canadianicon forces in Europe while the Mk3's were the backbone of the Infantry in the Far East.

    Worn breech block stops was also a problem for the L4 guns too but because of the geometry it was possible to stone the beating surface back to achieve CHS

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  9. #24
    Legacy Member MGMike's Avatar
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    Peter, I am sorry but I am not following the terminology. What surfaces are you referencing when you write "breech block stops" and "barrel bearings"? And was the inability to achieve CHS within tolerance a matter of too little or too much?

    M

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    Peter Laidler's Avatar
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    Hi MG Mike,

    In our terminology, as used in the Armourers workshops, the breech block stope were the beating surfaces on the left and right hand side of the bolt way that stopped the forward movement of the breech block on a what we call a 'dry gun' That is with no ammo. The breech block hits these stops and gradually wears/beats them down. On a live firing gun, the cartridge in the chamber indicates that that's as far as the breech block will go.

    The barrel bearing is the ring in the body that the barrel seats firmly against when the barrel nut is tightened down. There was a repair at Base Workshops to bore this area out and fit a new barrel bearing. Worn barrel bearing was one that wouldn't allow a barrel to be fitted tightly even with the No6 (?) barrel nut. The .303 BRen had barrel nut spacers to correct it but, alas, not the L4 guns.

    Quite why, nobody really knew!!!!!!! The barrel nut spacers certainly would fix the problem.

    As a general rule, taught to us, the spacers could only be used on one of the barrels of the pair. If both barrels needed spacers when the No6 barrel nut was fitted, the gun was ZF. Fitting barrels and breech blocks and CHS was a bit of a nightmare to be honest, especially for those Armourers brought up on the Bren that suddenly found that the same criteria couldn't be used on the newer L4 guns......... that were really just old re-worked Brens!

    The same sort of criteria applied to our later L3 Brownings........ which were really our old M1919's internally re-designed by Biffo-the-bear one evening after a drunken party in the woods.................

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  12. #26
    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by Peter Laidlericon View Post
    our old M1919's internally re-designed by Biffo-the-bear one evening after a drunken party in the woods.................
    That is correct...
    Regards, Jim

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    Legacy Member MGMike's Avatar
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    Peter: Thank you for the detailed explanation. But it raises a further question: Why would beaten-down breech block stops in the receiover render the gun functionally unserviceable? When a barrel is installed and a cartridge chambered, the extra space for forward bolt travel would seem immaterial. The bolt is going to halt against the cartridge rim leaving zero headspace or, failing that, against the rear face of the barrel, in which case the stops play no role in the resulting headspace. What am I missing?

    M

  14. #28
    Contributing Member Sapper740's Avatar
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    Quote Originally Posted by BurtonP View Post
    I suspected as much. It's DEWATed, as it has no internal moving parts; they're all welded up tight. It's not even cock & click. I'm fine with that.
    Unless the regulations have changed Canadianicon Bren DEWATs have to have the following:

    1) bolt face drilled out to not hold a firing pin.
    2) metal rod welded into the barrel with the weld being of a stronger metal than the barrel so you'd destroy the barrel if you tried to remove it.
    3) barrel welded to the receiver.
    4) gas tube cut.

    The magazine laws also required the Bren magazine to be irreversibly altered to hold no more than 5 rounds. I coud rack the receiver back on my Inglis Mk I DEWAT which I had until 2001 when I moved to Texas.. I ended up selling it as the BATF didn't like the uncut receiver on it. Did the Canadian Feds go back and make everyone who owned a Bren DEWAT weld the action shut sometime after I left?

  15. #29
    Advisory Panel browningautorifle's Avatar
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    Quote Originally Posted by Sapper740 View Post
    Unless the regulations have changed
    Yes, the firearm is welded to one solid piece. Decide what magazine you want because it'll be welded on. The barrel is usually milled open where it won't show. Solid paperweight.
    Regards, Jim

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