Odd problem with KSC Mk23

[CDN_Stalker]

Here's where I attempt to get some payback for all the advice I've handed out over the past few years. Lol

Ok, I've had the gun for less than a month, was barely used, I fixed that with lots of shooting with it, not a signle problem at all. I used the gun Saturday before the game at Rawdon, during the game I used it for a few shots, put it back in my chest rig pouch I modded to hold it (the DOH! part is I didn't secrure the strap) and near the end of the game I had to dive into a sand ditch for cover and the Mk23 fell out (not even a foot drop from where my chest was) and hammer side (hammer was dropped and safety on) of it hit the sand first. After I got smoked I blew the sand out of the action I cycled it and while it felt a bit gritty it cycled fine. Before packing it up I shot off about a dozen shots both single action and double action (dropping the hammer) and it cycled 100% every time.

I unpack it the next day, take the slide off and use a cloth and Q-tips to clean all the areas, rails, etc. then relube it. Go to fire it................

.......doesn't blow back. Shoots VERY quietly now, more a pop than anything, and is a low poof with the supressor. I only get about 60ft distance out of it with 0.25g. I've opened it up repeatedly, cycling the hammer action, watching what parts do what, etc. and I can't for the life of me figure out why it's acting the way it does. Most confusing thing is that it blows back with an empty mag (but not enough to engage the slide lock), but not with a loaded mag.

So, from what I can say, there isn't enough of a firing pin stroke to release enough gas. Nothing is jamming, firing pin moves and retracts freely, etc.

Anyone had a similar issue?

Thanks.

[Renegade)]

Super quiet mode now! That thing is a beast, and if that fall made it quieter haha, oh man.

[CDN_Stalker]

Ya, like I said to you earlier on MSN, it's actually quieter than my M24!

Been thinking (while chatting with Renegade), I think the problem lies within the nozzle somewhere (maybe a grain of sand in there, will check). Reason being, if I rack the slide to load a BB, it'll shoot like it is but not cycle the slide. I'll shoot it without the BB in the chamber, the slide cycles, and loads a BB, cocks the hammer. Gun will shoot the BB but not cycle the slide, then shoot on empty chamber and it'll load another BB. Because the BB in the chamber presses the moving tip of the nozzle back farther, I'm thinking the gas route has been reduced and is causing my problems. Will maybe take the chamber apart tonight to see.

[Ronan]

My little 2 cents. Sand got where it's not suppose to be. Did you try to clean it with those computer air spray? Grains of sands can be very hard to clean sometimes, especially when it's lodge somewhere.

[CDN_Stalker]

Ya, thanks, I kinda figured that out. It's just about locating that grain of sand, more to the point, what part of the gun to search in. I'm thinking in the nozzle, only place that makes sense.

[Ronan]

Best thing to do is to take it completely apart, and air blast every piece. Gonna take some time but you'll be sure that everything is clean.

Edit: Don't use the air bottles that blast icy cold air that leaves water/ice on everything.

[CDN_Stalker]

Yes, but my reason for posting is not that it *could* be sand related, in which case I don't need help, was only if something inside got jostled and needs fixing or replacing that isn't obvious. I'm not going to completely disassemble the gun, too much for me right now, and besides, I bought it because it can be fired in two modes, hammer cocked or not, not cocking it and having the supressor on makes it quite quiet compared to cocked and no supressor. If I have the choice of 100% disassembling it or leaving it, I'd leave it because it's deathly quiet right now, I'd say close to the NBB version of the gun, which is exactly what I wanted anyways.

The Mk23 is new to me, am figuring out what parts do what (a couple I see no use for), and am asking if there is a part that is sensitive to positioning that could have shifted that needs to be put back in place or not.

[BloodSport]

Originally Posted by Ronan

Best thing to do is to take it completely apart, and air blast every piece. Gonna take some time but you'll be sure that everything is clean.

Edit: Don't use the air bottles that blast icy cold air that leaves water/ice on everything.

For someone who is new, and who's been asking a ton of questions on the forums since they joined your the last person who should be giving advice out. Especially plain jane common knowledge advise, especially when given to someone like Stalker who has repaired more guns then you'll probably ever see. General note, unless you truly are in the know, stay quiet, that way you'll look smarter then you are.

[Ronan]

Originally Posted by BloodSport

For someone who is new, and who's been asking a ton of questions on the forums since they joined your the last person who should be giving advice out. Especially plain jane common knowledge advise, especially when given to someone like Stalker who has repaired more guns then you'll probably ever see. General note, unless you truly are in the know, stay quiet, that way you'll look smarter then you are.

Hmm just because i'm new to Canadian Airsoft doesn't mean i'm new to Airsoft. If me trying to help someone who helped me a tons of times bothers you, then do everyone a favor and don't derive the thread and send me a PM.

Stalker check this link out:
http://www.unconventional-airsoft.co...com-review.php

Scroll down to the middle of the page at Hammer Assembly Maybe something isn't going right there??

Like the almighty BloodSport so nicely stated, i'm far from an expert, just trying to help, especialy since i want to buy a MK23.

Edit: It being really quiet (when it's not suppose to), isn't that bad? And could damage the gun over a short period of time?

[CDN_Stalker]

Thanks Ronan, I read that before I got it, and now have the breakdown manual as well.

Regarding the quietness of it, it's because all the gas that's released is being sent down the barrel, and none of it going into the blowback chamber. Dunno if it's damging it at all, but the power of the gun hasn't really changed, it still almost goes through both sides of a beer can. Like I said, I'd rather leave it as is than disassemble it completely. I got it becauase I wanted a quiet GBB, looks like that has been surpassed. My main sidearm is always gonna be one of my G19s so it's not like I'm handicapping myself.

[Ronan]

Well you now have a unique GBB... resale it for 10x its price :P

Restaurant time (+6 hours ftw lol). GL with the gun, and tell me how it performs :P I seriously love that gun

[CDN_Stalker]

Well, I've used it enough (inside and outside, just not during a game) since I got in on Canada Day to tell you how it works and how to make it shoot and cycle better, you just gotta ask! Lol

[Ronan]

Hey Stalker, sorry to have bothered you and polluted your thread.

[CDN_Stalker]

No worries, you tried to offer help, even if it's very simple help (one problem with blowing sand out is that there's a damn good chance you will just move it from one area into/onto another area. Could actaully make a working but gritty gun into a non-firing gun just by blowing it. Luck of the draw really).

If you learned anything, it's fine, more so since you are considering buying one of these. If you buy one and want to make it like mine, I can help you with it, and show you how to drop it to make it quieter. Lol

Just don't make the "dead man" angry!

[Renegade)]

I was extremely impressed with Stalkers MK at Quickpass... not only has he taken a beastly gun that is usualy pretty loud, but quieted the thing down to a nice little thwip when you attach the silencer.. Very easy mod's that he did with the spring inside and the silencer, and it actualy works and you can notice the difference in pitch.

I say leave that grain of sand in there if u find it and its not doing anything else than making her quieter