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luke.08

hk px4

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hey guys. i recently bought a hk px4 from a friend. tested it today and im baffled. the slide locks back when pulled back with an empty mag in. yet when firing and finishing a mag it wont lock back. any ideas.

 

cheers luke

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It's the weather.

pulling it fully cycles it so the lock can go on.

firing it in the cold means it won't cycle the full way (especially after firing a full mag) and simply doesn't travel far enough back to lock out.

 

point the pistol at the floor and fire and it usually locks it.

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