My JP upper with a rifle length system on it will 'sproing'. I greased the spring which quieted it up, but the grease got dirty and started migrating forward, so I cleaned it all out. I'm living with the srping. It has an adjustable GB on it so I think tuning it has it so that you can sense and hear it better? I don't notice it on other guns, but all those are usually carbines.
My son's gammer gun we put a JP silent spring in. Works pretty well, but it is a carbine length set-up anyways. I'm pretty immune to distractions while shooting, but that 'sproing' was almost comical. Sounds like a spring BB gun, almost had be giggling on some stages.
Does a spring 'sroing' when it isn't coming back and smacking the crap out of the back of the receiver extension?
The Second Amendment ACKNOWLEDGES our right to own and bear arms that are in common use that can be used for lawful purposes. The arms can be restricted ONLY if subject to historical analogue from the founding era or is dangerous (unsafe) AND unusual.
It's that simple.
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