HI - I recently saw a post about a few probs a new member found with his 'B'. Here is 'part' of his post and my reply (in Bold) and some pics. All easy to do in a few minutes. Good Luck ! I hope this helps y'all

" [QUOTE=XOCLOCK;521681]My Mag rating - 2.5.
New forum member here!
My reason for rating a 2.5:
Cons:
No extended mags-My Biggest complaint, I wish they used 10/22 mags.
The 25 round BC mags work fine - I have 2x
No aftermarket magazines. SEE ABOVE - NO Need of 'other' mags.
Slow mag changes - hopefully I will improve with practice. You will.
Can be stiff to load and have finger cutting edges.
If you 'un-wind' the mag-spring a bit, it's much easier - see (my doc) Below
Take a file and 'round' the edges a bit - 5-min job.
PS - If you 'polish' ALL friction surfaces lightly with 600g or 1000g w/d paper you'll find everything will run smoother, too. The Bolt-Guide-Rail might 'scratch' bullets in the mag so it's advised to 'round' that leading edge, I just went about 1.5" back to make it smooth, too.
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