I just bought a polished blue Invert Mini and I did read the reviews on it and test the gun. I like the way the Mini was built and the way the Mini shoots. Besides the basic stuff that I might already know, are there anything else that I should know about my gun?
Thats all you need. Had 1 about a year ands thats the only upgrade I would recommend. The barrel is second to none for a stock barrel. Its fast. Look in the Mini FAQS page to brak in your bolt spring.
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I personally like the NDZ spring kit also. And since it's so cheap, the NDZ or MRT bolt with the spring kit. But they're not in any way necessary, they just allow you to tune it for better efficiency, and they do help reduce kick further.