The fake suppressors I have seen are solid hunks of metal. It will not cycle with all that weight and may even damage the gun since the gun can't recoil like it's supposed to. They are for looking at only.
With that said, I've never actually used one. Other people may have a different story.
Only fake suppressors that can be shot while on the gun, are MFI cans.
They're a steel tube, with a thin alluminum shroud around. They weight 5.5 ounces, so they are safe to shoot while on the gun.
I have on for my mark23, its kind of neat, but its mostly for show, not sooting. It is kind of neat to shoot while on the gun, but the few mags i shot mine with, it didn't lock the slide back on the last round (whereas it does fine without) so it does chug it a little.
A forum dedicated to and laser-focused on Heckler & Koch firearms, Heckler & Koch accessories and the owners and enthusiasts that love them! Come join the discussion regarding HK pistols, long arms, NFA arms, HK accessories, HK history and trivia and more.