X-valve on a Pump Mag?

[shooter311]

Hey,

I started building a pump mag. I was going to use an X-Valve in it (what not?). However, even with the wave springs it shoots in semi auto. Before I dive into this further, is it possible for the X-valve to be used as an automag pump?

Also, It had the long red spring on it so I swapped it out thinking that would be causing the issue, but even the shortest silver spring doesn't fix it.

Thanks!

[shooter311]

Follow-up question. Do I leave the bumper on the valve with the wave spring installed, or remove it (I tried both ways neither made a difference).

[Hobbes]

Keep the bumper. I believe you're supposed to cut it so it sits inside the wave spring. The RT valves use a softer clear bumper as opposed to the hard blue ones on regular mags, not sure if that could cause an issue. You also may need to cut the shortest spring. I think you want it about flush with the end of the bolt.

[Brokeass_baller]

The soft bumper is too compensate for abusive high speed so the bolt wouldn't hammer the crap out of the valve. Blue bumper will work just fine for normal play.

[Chuck E Ducky]

I have no idea but that mag is sweet!

[alpha_q_up]

Yes you can run an xvalve or lv10 on a pump, it does require a bit more patience and fine tuning than a lv7 does, you do need a bumper I like cutting blue bumpers, you do need to have either an old worn out spring or cut a spring shorter to allow for the wave spring to keep the bolt from resetting

[FredMnkyDad10]

Xvalve looks great on there but most would say overkill or a waste of the xvalve. Put a classic valve for the pump and use xvalve in semi mech.

And like alpha said old worn out spring or cut one. Cutting one can be tricky. I always wonder if there some after soft spring out there that could work for pump mags without having to cut, just drop in.

[shooter311]

This marker was possible thanks to you bro! Thanks again!

Those who think an X-valve is overkill, has not seen my noodle arms. Carrying around several extra ounces for a day could send me to the hospital!

Honestly, I have a couple non-working emag projects with X-valves, so why not use the x-valve over the classic valves I have? I guess the answer is that the standard valves work better as pumps. I'll probably switch it over.

[FredMnkyDad10]

Glad I could help. Is that one of the new 3D printed pump kits. How are you liking it?

[shooter311]

Yes I got it off Facebook, from a guy named Clint who makes a decent amount of 3d printed stuff.

It is very well printed. It does have a bit of a hollow feel to it, but it is sturdy and secure. It is a very smooth pump stroke. It is super hard to argue with anything on it for the price. My memory is shot, but I think it was like $45 total.

My only gripe is that the stock vert feed screw isn't long enough for this and I can't find a replacement. It is a simple 1/4-20 thread but all the screws at the hardware store had head too tall or too wide. Clint said he just sands the heads down on them and it works.

I sent the body and rail to Luke's Customs. USPS lost the package for about a week, but once it was found, it was milled and shipped back same day!

I always wanted a pump mag, but couldn't justify the price.

[Hobbes]

I had to modify a screw from Home Depot. The kit is decent and sure as hell beats anything else for the cost.

[cougar20th]

For the past 25 years I have always used a uncut clear rt bumpers. I found even cut blue ones are to hard. Even compared to the black pumpmag bumper the blues are hard.

Now using a clear you will wear thru them quickly.

Also why not just put a complete lvl 7 setup on the xvavle. I plan to for my next pumping build.