SCT17 "Ray Gun" Build Diary

Yup, 17 lb. return spring is typically magic especially when breaking in a new gun.
Plus this one has the micro-compensator on it.

Season 3 Nbc GIF by The Office
 
Plus this one has the micro-compensator on it.

Season 3 Nbc GIF by The Office
Yes, I remember. I've had experience with them and that's why I made the recommendation. First compensator I ran did the same thing as yours, so I had to find the perfect RSA. Every setback is a learning situation that just gives you more experience. As time goes on and the gun loosens up, you may be able to drop a bit. Just glad you got it sorted out.
 
Yes, I remember. I've had experience with them and that's why I made the recommendation. First compensator I ran did the same thing as yours, so I had to find the perfect RSA. Every setback is a learning situation that just gives you more experience. As time goes on and the gun loosens up, you may be able to drop a bit. Just glad you got it sorted out.
Yeah... I should have known, after my experience with the ported barrel on my "Tank" build. But I spaced it out and didn't think about it before going to the range the first time with this build.

And I've learned that you can't just pick ANY lighter spring. If you go too light... like I did with the 15# spring (which was all I had at the moment), you fix the ejection problem, but introduce a new problem of not returning to battery! :) The other potential problem with too light of a spring is battering the frame.
 
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Did someone say SCT 17 metal magwell?
 

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That snake eye sight grows on you, doesn't it?
I was at the range this afternoon. There's an RSO there I'm friendly with, and he enjoys seeing my latest build. Today I showed him the Ray Gun. And he loved the sights! He said, "My eye goes RIGHT to it!" He looked them up on his phone and plans to order.
 
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Added 100 rounds to the count on the Ray Gun today.

No malfunctions. But ejection is weak.

Season 3 Nbc GIF by The Office


Shells go up a little and then sometimes back at me, sometimes right, sometimes left. Most are landing on the bench.

I think I'm going to try going down to a 16# recoil spring to see if that helps with ejection.

PS... I also put 100 rounds through my PFC9 "EDC," bringing it to 8,700 rounds total!
 
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I went back to the range today to see if a 16# recoil spring would solve the weak ejection of the 17# spring. It seemed about the same.

So, I went down to a 15# spring again - You may remember I did that in post #216. But the problem with the 15# spring then was that it wasn't going back into battery reliably. I would have to nudge it into battery. This time, however there was no problem going back into battery.

So, is it possible it's an ejector problem? The build has a Gen4 (Wolf) ejector, FWIW.

My concern is the 15# spring may cause the slide to beat up the frame. Remember, though, the compensator reduces energy available to cycle the slide, right?

My question is whether a compensator reduces that energy THAT much (from 18# standard weight to a 15# spring)?
 
I went back to the range today to see if a 16# recoil spring would solve the weak ejection of the 17# spring. It seemed about the same.

So, I went down to a 15# spring again - You may remember I did that in post #216. But the problem with the 15# spring then was that it wasn't going back into battery reliably. I would have to nudge it into battery. This time, however there was no problem going back into battery.

So, is it possible it's an ejector problem? The build has a Gen4 (Wolf) ejector, FWIW.

My concern is the 15# spring may cause the slide to beat up the frame. Remember, though, the compensator reduces energy available to cycle the slide, right?

My question is whether a compensator reduces that energy THAT much (from 18# standard weight to a 15# spring)?
Did you shoot it without the compensator to see if that is the issue?
 
Did you shoot it without the compensator to see if that is the issue?
That occurred to me but I didn't try it, yet. The barrel / comp were hot, so I switched guns and didn't get back to it (ran out of ammo!). :) I need to do that next.
 
I've never used a barrel-mounted comp on a tilting barrel pistol, so I find this process interesting.
My pistol comps are:
  • Barrel mounted on a S&W 422 - Fixed barrel, so no change to function
  • Ported barrel on a Khar K40 Elite - probably not enough difference from a single port to mess with function
  • Mass Driver Comp on a 80% Arms build - Not barrel mounted, works amazingly well
I was thinking about adding one to my IceMan build, but decided against it. I may put on on my Polymer80 V1 when I build that out.

Thanks for documenting your process!
 
I've never used a barrel-mounted comp on a tilting barrel pistol, so I find this process interesting.
My pistol comps are:
  • Barrel mounted on a S&W 422 - Fixed barrel, so no change to function
  • Ported barrel on a Khar K40 Elite - probably not enough difference from a single port to mess with function
  • Mass Driver Comp on a 80% Arms build - Not barrel mounted, works amazingly well
I was thinking about adding one to my IceMan build, but decided against it. I may put on on my Polymer80 V1 when I build that out.

Thanks for documenting your process!
The Hellcat OSP has a barrel mounted comp. Works fine.
 
Last weekend, I brought my Ray Gun aka Space Demodulator to the range and met some friends there.

My friends fired it, and were all surprised at how much they like the crazy sights!

Ray Gun First Assembly (9).jpg
Ray Gun First Assembly (7).jpg

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I was shooting well with it... until... "Why is my group suddenly to the left???" Front sight came loose! Need more Loctite! :)
 
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BTW, I took the compensator off so I could try to tune the gun without it, first. I installed the 17# recoil spring. No malfunctions. But the ejection was sometimes weak and erratic. I will go down to a 16# spring and see if that helps.
 
BTW, I took the compensator off so I could try to tune the gun without it, first. I installed the 17# recoil spring. No malfunctions. But the ejection was sometimes weak and erratic. I will go down to a 16# spring and see if that helps.
What ammo?
 
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