Thingiverse
HK USP9 reducer plug
by SimonWolf
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I created this Grip Plug for my HK, because it's hard to get HKparts where i live.
so instead of waiting for a Reduced Power Main Spring (10/11lbs), i just reduced the Pretension on the Original Spring(ca.14lbs).
Works pretty great while dry firing, will try it on the range next week (26.03.19)
31.03.2019: 3.5mm Plug worked just fine, less Pull weight, 5.5mm had some light primer strikes with stock firing pin spring.
Original pull weight is: ca. 3.6kg / 7.9lbs ;internals polished
3
so instead of waiting for a Reduced Power Main Spring (10/11lbs), i just reduced the Pretension on the Original Spring(ca.14lbs).
Works pretty great while dry firing, will try it on the range next week (26.03.19)
31.03.2019: 3.5mm Plug worked just fine, less Pull weight, 5.5mm had some light primer strikes with stock firing pin spring.
Original pull weight is: ca. 3.6kg / 7.9lbs ;internals polished
3
Makes
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