P80 PF940C Build: Slide Not Cycling

[SandBlastedSkin]

Got done with this build, sanded and polished the crap out of the rails, made sure I removed all necessary material and probably a little extra, took it out for its maiden voyage.... and it's single shot. lol

The slide doesn't even recoil enough to eject the round 98% of the time (it has ejected the round once out of about 50 attempted rounds so far).

I'm at a loss as to what the problem is. Spring rate? I don't know. There does seem to be a little friction still, but not enough where I'd think it has the chance to stop the recoil an inch into it's travel.

Here's a list of the relevant parts:

Lone Wolf Enhanced Trigger Parts Kit
Shadow Systems Slide Kit & Recoil Spring Assembly
L2D Slide
True Precision Barrel

Tried three different magazine, happened with every one.

A picture of about how far the slide gets every time is attached.

Anyone have any advice on what I should try? My next thought would be to start replacing the internals with standard Glock parts, but I'm not so sure that'd do the trick?

TIA

[Troublez323]

Its this the v2v or 1.5

[SandBlastedSkin]

Not sure. What's the difference? How can I tell?

[shafferds]

Use factory oem glock parts. Lone wolf parts are alot of the issue in these builds due to out of spec.

[NoHeavyHitter]

Make certain that you've fully removed all required material from the recoil spring channel. When you cycle it by hand, you should be able to detect drag or hang ups..

[SandBlastedSkin]

I really thought I have, but I may revisit it this weekend and take out a little more. If the slide only cycles about an inch, that makes it hard to believe it's an internal component issue, but that will definitely be my next step if it's not an interference issue.

[ar15barrels]

Got done with this build, sanded and polished the crap out of the rails, made sure I removed all necessary material and probably a little extra, took it out for its maiden voyage.... and it's single shot. lol

The slide doesn't even recoil enough to eject the round 98% of the time (it has ejected the round once out of about 50 attempted rounds so far).

I'm at a loss as to what the problem is. Spring rate? I don't know. There does seem to be a little friction still, but not enough where I'd think it has the chance to stop the recoil an inch into it's travel.

Here's a list of the relevant parts:

Lone Wolf Enhanced Trigger Parts Kit
Shadow Systems Slide Kit & Recoil Spring Assembly
L2D Slide
True Precision Barrel

Tried three different magazine, happened with every one.

A picture of about how far the slide gets every time is attached.

Anyone have any advice on what I should try? My next thought would be to start replacing the internals with standard Glock parts, but I'm not so sure that'd do the trick?

TIA

Use the process of elimination to figure out your problem.
You will need a complete factory Glock to swap parts with.
Start by stripping your frame down completely and installing ALL factory parts on it.
If that functions correctly, start introducing one suspect part at a time.
I would suggest the order to be slide, then the barrel, then the fire control group.
The problem should appear when you install the bad part.
The problem should go away when you remove the bad part and install a stock glock part.

[AlHO1966]

Switch to all factory parts, put extra lube on it, rack the slide by hand about 1000 times. That is if you’re not feeling friction while manually cycling the slide if you feel hang ups you probably need to remove more material from the recoil spring channel as you can see if you’ve removed enough from the rails.

Then if you want to use aftermarket parts install one at a time. But why not just run stock glock parts?

[SandBlastedSkin]

Use the process of elimination to figure out your problem.
You will need a complete factory Glock to swap parts with.
Start by stripping your frame down completely and installing ALL factory parts on it.
If that functions correctly, start introducing one suspect part at a time.
I would suggest the order to be slide, then the barrel, then the fire control group.
The problem should appear when you install the bad part.
The problem should go away when you remove the bad part and install a stock glock part.

Only problem with that is I would need a complete factory Glock, and I don't know anyone that has one that could loan it to me.

Then if you want to use aftermarket parts install one at a time. But why not just run stock glock parts?

If I knew then what I know now, I would have. I was unaware these third party kits would be a downgrade in quality.

Seems to me my next course of action is to see about removing a little more material, then if that doesn't work start replacing parts with OEM and hopefully that takes care of the issue.

[mitch1]

My opinion, polymer 80 had a lot of problems with the rear rails, contact them about this. The problems were in the bend at the rail causing binding.
What pound recoil spring did you get? There are 11# thru 22#, usually color coded on aftermarket. Also check and make sure the guide rod is not binding, both internally(spring retainer to shaft) and externally(where you milled the channel)
As for the V2 vs V1.5, you have a PF940C which are all V2

[ar15barrels]

Only problem with that is I would need a complete factory Glock, and I don't know anyone that has one that could loan it to me.

This is what's called a learning moment.

The normal practice when building guns is to have a completely functional factory sample as a reference.
Then you have a "known good" set of parts that you can take measurements and borrow parts to check fitting as you go through the build process.

You are basically working blind so you don't have a way to actually know for sure what part is the problem.
This normally results in cutting the wrong places and ending up with a scrapped reciever.
People will sometimes destroy 2 or 3 of them until they figure out the problem without a factory gun to compare against.

[johnk518]

have you checked the height of the takedown spring? They catch on the guide rod spring. File it down if so.

[rights]

Sand out the channel were the guide rod and spring go take off a little bit at a time had the same problem

[SVT-40]

Take some pic's of the recoil spring area, as in the pic's below. Many guys don't remove enough material as in the first pic. Make sure the recoil spring recess looks like the second two pics.

Also make sure the spring for the slide latch is pushed fully down into it's recess. None of it should be above the polymer where the recoil spring and guide seat. You may need to remove just a bit of the tail of this spring so it fully seats below the recoil spring and guide.

[BajaJames83]

thats a hard guess as others said with nothing factory matching spec you have nowhere to start from.