There is one issue with Marui GBB pistols that in my opinion, makes thenless than ideal as a training weapon. It's the weight. Marui guns are allplastic slides (except for the custom weapons, which are overly expensive).
If you are Glock, SIG, Beretta, or 1911 user, there are many reasonablealternatives for training weapons. KWA, HKC, King Arms, We Tech, etc. Theseoptions will be closer in weight to the real thing than Marui pistols.
Muscle memory is a key component in any training simulation. If the trainingweapon is not as close as possible to the weight of your real steel weapon, itis not much good for what you are trying to do.
But, thatís just me. Maybe!