Paul,
You asked about the differences in the fuzes for the L2 Hand Grenade.
There were six experimental fuze designs during the development of the L2 that were mature enough to get an experimental designation. There were Fuzes, Grenade X40E1 through to X40E6. I have not summarised details of these. The X40E6 became the Fuze, Grenade, Percussion L25A1 and I know that you are familiar with the general make up of the fuze (striker assembly mounted in the fuze body with fly off lever and an adapter assembly comprising cap, delay and detonator in a housing).
L25A1 was a pre-production fuze and it was not introduced into Land service.
Briefly the differences in the service fuzes are:
L25A2 Drawing No QX422GF Design No P1/17763/E Differs from the A1 in modifications to improve safety and prevent malfunction of the safety pin.
L25A3 as A2 but is fitted with a stronger striker spring and the body is slightly modified.
L25A4 Drawing No QX447GF Design No B4/5223/GF Fitted with a new design of striker mechanism and adapter assembly.
L25A5 Drawing No QX460GF Design No B4/5583/GF Differs from the A4 in the make-up of the detonator
L25A6 Drawing No QX477GF Design No ET/2328/GF. As A5 with different delay tube filling and different percussion cap.
The differences across the range are hardly discernible to the naked eye but the aluminium alloy fuze body can be marked with either the drawing part number (often QX2267 which identifies just the fuze body) or the designer’s reference number.
Levers of course moved around on inert examples of the fuzes.
You asked about the differences in the fuzes for the L2 Hand Grenade.
There were six experimental fuze designs during the development of the L2 that were mature enough to get an experimental designation. There were Fuzes, Grenade X40E1 through to X40E6. I have not summarised details of these. The X40E6 became the Fuze, Grenade, Percussion L25A1 and I know that you are familiar with the general make up of the fuze (striker assembly mounted in the fuze body with fly off lever and an adapter assembly comprising cap, delay and detonator in a housing).
L25A1 was a pre-production fuze and it was not introduced into Land service.
Briefly the differences in the service fuzes are:
L25A2 Drawing No QX422GF Design No P1/17763/E Differs from the A1 in modifications to improve safety and prevent malfunction of the safety pin.
L25A3 as A2 but is fitted with a stronger striker spring and the body is slightly modified.
L25A4 Drawing No QX447GF Design No B4/5223/GF Fitted with a new design of striker mechanism and adapter assembly.
L25A5 Drawing No QX460GF Design No B4/5583/GF Differs from the A4 in the make-up of the detonator
L25A6 Drawing No QX477GF Design No ET/2328/GF. As A5 with different delay tube filling and different percussion cap.
The differences across the range are hardly discernible to the naked eye but the aluminium alloy fuze body can be marked with either the drawing part number (often QX2267 which identifies just the fuze body) or the designer’s reference number.
Levers of course moved around on inert examples of the fuzes.
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