I picked up a Cobray CM-11 for grins and giggles a couple weeks ago...loaded it up, took it to the range. It seemed fine, but after about 15 rounds, it started double- and triple-tapping on me, depending on how I pulled the trigger. Obviously, this made me go "uhhh", unload the damn thing, and pack it away. Bought it home and cleaned it, and it was *Filthy*...I gave it a quick wipedown after I bought it but didn't really *clean* it. Really cleaning it flushed out a LOT of gunk.
To define "how I pulled the trigger", if I quickly broke and let it go, it'd fire single, fine. If I slowly bought it back, it'd double-triple. If I quickly broke and held the trigger back, once again, it'd fire just one, and that was that.
Now, after the cleaning...if I pull the trigger, manually cock the weapon, and then let go of the trigger...I can hear the hammer let go and hit the firing pin/bolt.
I take it this is not normal for a CM-11.
I looked at the inside of the weapon and I couldn't see if any parts had been obviously "modified" (perhaps the previous owner decided he didn't want a semi-auto, who knows)...but either way.
I haven't taken it out since; I live in a non-class-III friendly state, and if I went to the range to test it and it started double and triple tapping again while someone was around, it'd raise too many eyebrows.
Anyone have any suggestions as to what I should check on it's internals? (I don't have a manual for it)...or any other suggestions? I'm about to bring it back to the store that sold it to me. Dunno if I'll get a refund, but I should probably be able to get store credit. I've had it for almost a month, and I've only taken it out once...and put less than 30 rounds through it.
Not that I'm afraid of the thing now that I know how it can act, but it's certainly not safe, especially if either I'm not expecting a burst, or if I let someone else fire it...
Any opinions/thoughts?
Thanks...