I didn't shot it yet, but no I didn't change the spring. The sight only weights 1.2oz not sure of the mounts weight. I'm going to the shooting range tomorrow, I'll post an update on the performance afterwards.
20131118_234404.jpgWant to update on the gun performance: Went shooting the other day with my brother and my wife.. my bro has a springfield 1911 45. As to my m&p, I was shooting just fine did not feel any difference from before without the sight. Still need some adjustments but by the time we were finishing up I had it adjusted pretty well. My wife likes the 1911 mostly becauce of the kick. The 1911 I heavier but doesn't kick back as much as my m&p plus she was aggravated becauce the sight on my gun wasn't adjusted right so she would miss a lot.
My machine... m&p 45
. Got a new sight mounted.
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