Mk1 vs. Mk2 Buttstock Return Springs

[Peter Laidler]

The double return spring was to counter the extra impetus to the breech block and piston assembly. This was caused by the increase in diameter of the gas hole in the barrel (Mk1 to Mk1* barrel). As a result the working parts hit the buffer plate with such force that it cracked the buffer plate where it joins the rounded part at the rear.

Opening up the gas port also caused a more violent unlocking of the breech block by the piston post. This resulted in the piston post spring breaking and thus, the piston post spring plunger bottoming out and rounding the bottom end........... A real dogs dinner! So the piston post plunger was replaced with a shorter one.

And the buffer plate STILL cracked in the circular area on the face. BUT, to make life easier for the gun crews, a spare piston post spring was always kept in the spare parts tin, in the wallet or holdall

As a bit part amateur regarding Brens, I say that the OUTER spring remained the same.

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[browningautorifle]

As a bit part amateur regarding Brens

I was hoping you'd see this post.