K11 serial number

[Aragorn243]

My opinion, do not fire this with GP11. The upgrades were designed to allow for use of the new GP11 ammunition but the original bolts and barrels were retained. Functionally, they are to be the same as the K11 but without replacing the barrel or receiver I can't see how the pressure rating would be increased. All pre-1911 rifles were authorized to fire GP11 only in wartime emergencies so while the rifles might be safe to use this, for how long who knows. I think you're playing with fire. The rear lug bolt is one of the weak points that were corrected in the K11.

Great book on these is For Collectors Only Swiss Magazine Loading Rifles 1869-1958. This particular modification is not listed and is probably lumped in with the 1889/11 conversions.

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