Crosman Full Auto BB Magazine - Full Disassembly and Internal Check Valve... No More Secrets! 

Glad to help out! GL

Yeah Thanks! It always helps to see the insides of our favorite airguns.

​@@RWMAirgunsmithinga a qàqq

@@jamescdean9010 thanks for feedback! xD I never got mine to work properly after the first reload. The tinkerer in me has been nagging me every time Ive seen it in the past 5 years lol. About time I get to it hehe

@@RWMAirgunsmithing I shake the mag as instructed, but the BBs won't load. I think there is a clog blocking the feeding aperture. I guess I'll get another for $60 from Amazon.

Thanks for the continued support xD I try and include everything I wanted to hear when I started airgunsmithing hehe. I just need a little more "production value" !

@@RWMAirgunsmithing hey man, great videos 👍🏻👍🏻

Thanks! Great question hehe, the only thing that I feel is a bummer is the thermal co2 freeze and the finicky tightening of the co2, would have been great if we didn't have to worry about the co2 dumping. I think if the brass seat had the same diameter as the piercing needle we wouldn't have this problem. I most definitely will get myself a HPA conversion kit so I can at least zero my optics with no co2 thermal influence.

Thanks for watching!

Oh not a bad idea! I was thinking some type of small spring loaded claw (like on some mechanical pencils lol). Also just fyi, on one of my mags the seal on the first co2 just fell right out.

@@RWMAirgunsmithing dude that would be better, I just put mine back together it’s the QR mag and followed all your videos I think I just needed lube on the ball bearing. The ball bearing is in the “first” slot on the QR mag it’s weird. Oh damn just fell right out, that doesn’t sound like a good connection. Of all the Crosman I have a a4-p, was thinking of getting a DPMS would you prefer that or another crosman full auto ?

@@solventlessherbalist135 I'm a big fan of the AR platform, the DPMS is fine if you dont mind the plastic stock, get the R1 if you want ALL the mil spec xD

@@solventlessherbalist135 always remember to not overtighten the co2! You can still jam the bearing if too tight.

Thanks for the feedback, always glad to help out!

The fat one? Crosman calls it the 'full auto high capacity QR mag'. A google search should get you some shops that have it, or you can order it directly from crosman.com

Unfortunately, crosman has not begun to sell the individual parts yet. On the Canadian site there's about 5 or 6 parts and half of them I have never seen in stock.

@@RWMAirgunsmithing, any how, thank you. Hence we shall buy as assembled parts)))

@@user-hv2su3ix1i yeah, it's a bummer, depending on your level of enthusiasm for this model maybe you could pick up a refurbished or second hand airgun for cheaper and cannibalize it for spare parts.

Got damn right! Lol , once you know the trick she's not that bad 😜

Crosman led me here. Thanks for the video and detailed advice.

@@SilencedRage thanks hehe, I should send them a bill xD

@@RWMAirgunsmithing hey buddy quick question, how do you know when to change the second CO2 cartridge in the DPMS? There is no real info or video out there. *Second CO2 cartridge

@@SilencedRage hmm they should both empty out at the same rate and you change them both at the same time. What is happening when you load/unload your co2? Edit : if the bcg is still cycling and your poi is not significantly dropping then you still have co2 to burn. Rapid plinking and full auto can make it seem like you run out of co2 (you can usually tell the difference) letting the co2 rest between reloads or having multiple mags will solve this.

I can understand your frustration, part of the reason I make these videos is to help out those who get the bad mags (even though there shouldn't be any). I guess after 30+ airguns I have gotten use to tinkering with them lol.

Hmm not sure of the size but the goal is to have a flat bit wide enough to catch both notches on the tightening ring. This way you dont have to worry about damaging the piercing needle or the threads.

Heya, which mod are you talking about? And does it empty out the firing direction or the blowback side?

@RWMAirgunsmithing it was an attempt at rhe valve mod. You drill bigger holes in the ports to release more co2. I never really achieved that but when I put it back together the problem arrived. Mostly the co2 comes out the front bb part and a little from the back too 😅 After watching thr video I decided to dig out the broken one, I have 6 so I had to fill all of them with co2. One that was just repaired under warranty is leaking again so that's getting returned again. I have started to strip down the one I tried to mod and I'm going to see what's going on with it. I could do with a proper valve tool but can't ever find them

@@Replica-Airgun-Lovers ok ive seen that mod, technically it is all internal, pretty sure if the brass or interior valve stems are not marred and all the parts are assembled in order there should be no external leaks. Did you follow along with my video to make sure all the parts are there? I never had issues or had to over tighten that valve assembly, it just snugs right into place. To find valve tools you need to check the big sites like pyramidair.. or google for airsoft shops, I buy most air tools and accessories from local airsoft shops.

@RWMAirgunsmithing I think I'll buy a decent toll and give it another go. I can't undo the valve now with what I have. It is leaking from front and back but mostly back. I'm sure I never lost anything parts but when I get the new tool I will open up another and compare them to each other and hopefully see what's wrong. I'm in England so getting parts is impossible and crosman won't send or help out due to being in England. Thanks for the assist. I'll have another watch of your videos aswell and see if I missed something

@@Replica-Airgun-Lovers oh snap! No customer service overseas! That sucks! Really sounds like there is something missing or broken inside there, the pressure from the springs should keep everything shut. Can you depress the valve manually? Might be stiff but I can push down on mine with my nail.

If you check out my tips and tricks video I show what the issue is. There is a ring that holds the co2 seal and piercing needle in place, you probably need to give it a little tightening on the second, just dont over torque.

@@RWMAirgunsmithing ok thanks I just need to find a big enough flat head to fit

Couldn't hurt to try contacting customer service. Those are pretty hard though, the cheap metal from co2 shouldn't wear them that quick I think. Have you watched my tips and tricks video? To make sure the check valve is not jammed?

Yeah, the magazine still works fine right now. But I’m starting to notice that when I pull out the used cartridges the puncture hole is barely even open. At least compared to how it used to be.

@@silverwing5644 I wouldn't worry until you see a noticeable difference in ballistics or if there is excessive co2 left when you unscrew them.

Unfortunately crosman doesn't sell many individual parts for this model yet. If your spring is mangled beyond use, it is just a spring, check airsoft shops or just google it. As long as it will fit on the follower and is not too weak or too strong it should do the job.

@@what_itdo9107 8inches!

Can u get a new magnetic for it

You can buy various sizes of magnets with a google search. If it fits in the little slot it should work. Hope you can find a replacement, maybe contacting crosman would be a good idea.

I have put a SMALL drop (I wouldn't even call it a drop, more like a thin film) of pelgun oil (the red stuff from crosman) on all my co2 since my first airgun. I use silicone oil on moving parts and other rubber seals on the airgun. The main purpose of the pelgun oil on the tip of the co2 is to prevent the frostbite and condensation from the metal cannister to damage the rubber seal dedicated to the piercing needle.

@RWM Airgunsmithing Ok. Thats what we do on my Son's Ak1 and Im getting the A4P. Thankyou for the quick answer. I look forward to your new vids and have watched the older ones also.

@@lanetaylor7496 thanks! Have fun plinking xD

What happens with yours? I stopped using copper coated when I noticed all the copper powder in the bottom of the jar only a couple months after purchase. Still have like 3k bbs in it lol xD.

@@RWMAirgunsmithing looks like the loading mechanism is magnetic in the mag, copper just won't fire correctly...

@@VIRGILSHELTONII I haven't tested any since that copperhead jar, but technically bbs should be steel with a copper coating. I still wouldn't recommend them because of the flaking.

Are you using an unmodified magazine or do you let it sit in the sun? Does the bolt lock back when it happens? Do you get full power when it actually does fire? Maybe most important, have you field stripped it yet and verified the springs aren't mangled in the buffer tube?

@@RWMAirgunsmithing the bolt does not lock back when it happens I've never let it sit in the sun

@@xtdungus6352 ok so does it shoot full power on the initial shot or does it seem weak? Does the charging handle pull back freely or does it seem like you are crunching springs? It's possible you aren't getting full power from the magazine. There is a possibility also that the "hammer chip" (the little black knob on the tip of the bolt) is either broken, missing, or worn out. If it doesn't protrude enough the bolt will not make solid contact with the firing pin and you'll get weak blowback.

@@xtdungus6352 sorry for the questions but I need information to troubleshoot xD

@@RWMAirgunsmithing it shoots full power but every time I shoot I have pull it back again to be able to shoot or it won't shoot at all and btw thanks for actually responding

Any spring with relatively the same shape and size should work. Check out airsoft repair shops if you cant find one on google. I've been receiving comments and read on forums that crosman customer service is sending out replacement parts, I would seriously try contacting crosman and see what they will do.

You mean like crosman.com ? Hehe

If the co2 from the first dumps out the second slot then the ring seating the green seal might need just a little tightening on the second slot.(maybe not even a quarter turn)

It’s the first slot, the one that needs to placed in first. So should I tighten that?

Okay so it definitely comes out the second one when I put it in the first one 😢

@@illest8 yeah it shouldn't come back out the first. Visually inspect the green seal is not crooked first just in case, dont want to damage it.

@@illest8 yeah so probably something is not seated properly or it just needs a small tightening. Edit : on the second slot.

I am very flattered that you would trust me with the repair but I dont really have anything set up to provide this service. Considering the price of the magazine I'm afraid it would probably be more worthwhile for you to simply buy a new one. Maybe we can troubleshoot together and possibly fix it with minimal tools. Is a new mag or was it dropped or has it been thousands of rounds? Also what exactly is happening when you load co2 or try to fire?

Hey btw, crosman has no tech service.. based off what I see in the comments if you contact crosman and tell them your issue they might send you a new one. Edit : would love to fix your mag but in the off chance i need parts i would have to buy a new one :/

Easiest way without mods would be to tether to an HPA tank and regulator. If you wanna modify the airgun or magazine and void warranty go check out RumbleCanada here on youtube, he has some crazy "not used as intended" mods. Just be ready to reinforce or replace the internals on the upper and lower seeing as the increased pressure will wreak havoc on them.

@@RWMAirgunsmithing thx a lot