Crosman 600 Trigger Mod



Author Topic: Crosman 600 Trigger Mod  (Read 454 times))

Offline WyoMan

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Crosman 600 Trigger Mod
« on: July 05, 2017, 12:27:12 AM »
Sometimes I'll save small springs... especially from pens. But I never thought I'd use one in a Crosman 600...




Shown with the OEM trigger spring:


Clipped a few coils and installed:


Loaded up the gun:


Then emptied the mag in less than a minute:


A lighter trigger pull makes a huge difference in pistols for me, so I'm buying another pen to change out the other 600  :D

this was one of the Crosman 600s that were restored in this series:
Part1:  http://www.gatewaytoairguns.org/GTA/index.php?topic=121809.0
Part2:  http://www.gatewaytoairguns.org/GTA/index.php?topic=121810.0
Part3:  http://www.gatewaytoairguns.org/GTA/index.php?topic=121811.0

Wyo

  • Wyoming

Offline Hare splittin

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Re: Crosman 600 Trigger Mod
« Reply #1 on: July 11, 2017, 12:57:55 AM »
Nice shooting.

I understand these can shoot full auto sometimes.  Does the lighter spring ever give you that feel?
  • Nebraska
Velocity is for show, accuracy is for dough.

Offline WyoMan

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Re: Crosman 600 Trigger Mod
« Reply #2 on: July 11, 2017, 03:04:42 PM »
Hi Bill, thanks for that... the lighter pull really helps.
To answer the question requires a little background info... hope you can bear thru this:



Look at the three circles in the above picture. They show the key parts of the lock for semi-auto action.
In the white circle, the pawl has been rotated forward by the hammer travel. This, in turn, pulls the trigger link off of the trigger sear (pink circle).
With the link and the trigger sear uncoupled, the hammer sear and trigger sear are free to latch (aqua circle) when the blowback occurs... otherwise, you'd have full-auto. The 600 can be made full-auto by removing the 'dog' on the pawl that pulls up on the trigger link (white circle again)... I've never tried it (too chicken  :D). It can also go full-auto due to a malfunctioning mechanism...If the pawls gets broken, or if there's excessive wear to prevent the sear latch (aqua circle)

So getting back to the question, the trigger spring operates independently from the semi-auto components so there's no effect -

Wyo
  • Wyoming

Offline Hare splittin

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Re: Crosman 600 Trigger Mod
« Reply #3 on: July 15, 2017, 01:22:52 AM »
Thanks for the explanation and diagram. Seems straight forward now that you lay it out, but doesn't it always.

Are those springs hard to come by?
  • Nebraska
Velocity is for show, accuracy is for dough.

Offline BillyBob84

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Re: Crosman 600 Trigger Mod
« Reply #4 on: July 15, 2017, 07:59:01 AM »
That is an amazing gun. You must take such good care of it.
  • Des Moines, IA

Offline WyoMan

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Re: Crosman 600 Trigger Mod
« Reply #5 on: July 15, 2017, 10:30:09 PM »
Thanks, guys.
Bill, the torsion springs are still available but for how long I don't know. I have one replacement set for five CR 600s... might get another set - thanks

Wyo
  • Wyoming

Offline Nutcracker

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Re: Crosman 600 Trigger Mod
« Reply #6 on: July 23, 2017, 09:42:01 AM »
Thanks for the tip, will try that.  Nice group.

Offline robtmc

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Re: Crosman 600 Trigger Mod
« Reply #7 on: August 01, 2017, 04:14:16 PM »
What did you refinish your 600 with?  When I rebuilt mine I stripped off the old black paint.  Tried a few paints, but none were toughenough.  Stripped it back to bare aluminum and polished it.  Pimp-style 600, if i could only find pearl grip panels.
  • Hawaii, Kailua Kona
Discovery .22
RWS 48/52
Beeman 850/Diana 6M 
Crosman 2240
Benjamin Trail NP (Gifted to brother to learn to shoot)
Crosman 600

Long gone but fondly remembered:
Sig Hammerli 401

Offline WyoMan

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Re: Crosman 600 Trigger Mod
« Reply #8 on: August 03, 2017, 12:00:11 AM »
Hi Robert, I used ceramic coating because I wanted to keep the coating thickness at a minimum. It made it easier to get the slide group and other areas with tight tolerance to fit.

Wyo
  • Wyoming

GTA - What's been your success with air gun target practice?