Ditto on the recoil spring. Did you replace yours?I purchase the 1911 "Tank Commander" (4.25" barrel).
First impression is that the recoil spring is really "heavy"; racking the slide is upper body exercise!
Also, as mentioned earlier, the provided mags seem cheap; they don't hold the slide back on empty and the follower sticks out the front when empty.
Otherwise I'm extremely happy with the purchase.
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