Re: Opinions on paintball guns? I'm buying one soon.
well i cant comment about the value for money, but from what ive gathered from my years of playing, the M4 (and other similar types) replicas look the part, but dont even begin to compare to the likes of Angels, ****ers, Timmy's, etc.
as for the caliber - you will find the .63 caliber paintballs more readily available than the .43. this means you will more than likely have to supply your own if u go to a local site. and some sites arent happy abt that, because paintballs is where all of their profit comes from. it probably wont have as good a range as you're used to due to it being smaller, therefore lighter, therefore less momentum, etc etc.
is it safe and legal to use? well im guessing your rules are the same as ours, which means when its fired through/over a chronograph, it should register no more than 300fps, but ideally 270fps is the preferred number, just incase you get a spike in the pressure.
the best thing you can do is phone the place that you're looking at going to play with ur new marker, and ask them whether they'll let you walk on with your own kit, whether they'll chrono it for you, whether they'll refill ur CO2/O2, whether they're happy for you to bring ur own paint with you, etc etc.
and as a personal thing - things like the M4 replica are great it you're playing the proper scenario games, and want to look like proper army, etc. if you're looking at playing with your own kit and just want to get better, play tournaments, etc, id steer faaaaaaaaaar away from that kinda thing and buy one of the types i mentioned near the top!!