[X-Treme Bullets 165gr 9mm]

I've used VV340 with good result

165gr x treme

3.0gr VV340

1.155-1.160 OAL

780 fps av

shot from 1911 5"

[M&P Mag Basepad Extension for 10rnd full size mags]

Sean

you need those

[M&P extended mag release]

this is mine. on a standard button put on top a piece of plastic. more than a year with no problems

[M&P 9L Kydex Holster]

Blade Tech Holsters - OWB Holster

http://shop.blade-tech.com/owb-holster-c-1_23_24.html

or

http://ads.midwayusa.com/product/986376/blade-tech-asr-outside-the-waistband-holster-right-hand-s-and-w-m-and-p-kydex-black

[Fitting a KKM barrel?]

Where did you buy a barrel? I did order in January. A few days later received a mail from Kevin, where he wrote that it will take the 4-5 weeks. After 5 weeks, I called and he told me that he needed another 8-10 weeks