Don't get him into P7's. They are worse than a crack habit. Coolest 9mm's ever made. They go for about $1300 these days, but are worth every cent.
Most IH8Mud'ers would like them due to the squeeze cock grip. They are super cool. You squeeze the grip to cock the gun and deactivate the safety. The cocking lever also makes the P7 very simple to operate and shoot. Pulling back the slide is simple and safe, for the pistol cannot fire as long as you don't compress the cocking lever. During firing, the pistol is automatically rendered safe immediately when the cocking lever is released. The cocking lever is also the pistol's slide stop, for like many auto pistols, the P7's slide is locked open after the last shot has been fired. Releasing the cocking lever and then compressing it will permit the slide to close. All this can be done while the pistol is being held in the normal fashion. This feature, combined with the magazine catch on both sides of the frame and the absence of any manual safety, makes the P7 completely ambidextrous.
The magazine steel is reinforced and strong enough to drive a truck over without malfunctioning (the reps used to do this in their demos). The mags are not cheap as a result, but they last forever.
The 9mm P7M8 has 8 round capacity and the P7M13 has 13.
The .40 cal P7M10 has a capacity of 10 rounds and is essentially the same gun sized up to handle the .40, but the barrel in this model has standard, non-polygonal rifling. (A good H&K info site)
http://remtek.com/arms/hk/civ/p7/m10.htm
A site with some sweet P7's that are for sale.
http://mactec-militaryarms.com/hkp7.html