Walther P99 upper on P990 lower compatibility?


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Old 11-21-2011, 10:01 AM   #1
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Default Walther P99 upper on P990 lower compatibility?

I asked this in the semi auto general forum and never got an answer. Hope someone watching this forum might know the answer.

I have a Walther P990 that I got over 10 years ago. A friend gave me a P99 upper they had. Question is, will the P99 upper fit the P990? It obviously fits, but I have not tried to fire it. The single action doesn't seem to lock. Don't know if will after cycling, or is there any modification that can be done to the lower to convert it to work with the P99 upper??



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Old 11-21-2011, 10:24 AM   #2
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If the SA mode will not work by hand, chances are it will NOT work in cycling.

If the reason to adapt the P99 slide to the P990 frame is to change caliber, there may be more work involved.

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