I have one of the ex-Poleizi PSP's and love it. The heel release is actually very easy to use. The only problem is finding mags as they are different from the M8 ones. I was lucky and found some on ebay back when such things could actually be sold on ebay. I have 4 mags for my PSP which I figure is enough for competition if I should so choose.
Besides a decent 1911, a P7 is a gun every gun enthusiast should own.
Besides a decent 1911, a P7 is a gun every gun enthusiast should own.