HardBall
The Glock 18 is not designed to empty whole mags at a time. The weapon is designed to be utilized in a burst method. Having fired this weapon, I had no problem keeping all 33rds center mass on a B-27 at 12yds. You will be inefficient if you just hold the trigger back til the slide locks. This is a very effective weapon for the point man w/ a shield on an entry team, or for breaking ambushes when doing VIP escort. The beauty of this weapon is a higher cyclic rate than an MP5, but it still fits in any Glock 17 holster. I'll take two!
Be Safe
Mike