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All Springer/NP/PCP Air Gun Discussion General > Gamo & Spanish AirGun Gate

PRESENTING THE GRT-4G TRIGGER FOR THE GAMO LATE MODEL WITH PLASTIC TRIGGERS

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GlennS1956:
Just tried out my new GRT-4G trigger. I had previously done the screw replacement trigger mod on the stock plastic trigger. I was so happy with the 8 mm long screw I didn't even try the 10 mm screw. If I had done that before I ordered the GRT trigger, I probably would not have ordered it.

At first I didn't like the new trigger at all. Then I turned the adjustment screw in 1.5 turns. Now I see why people love it so much. When I pull the trigger it doesn't pull the gun off target at all. And the groups are noticeably smaller.  The adjustment screw turned in a little too easily, so I will eventually have to pull it out and put some blue loctite on it.

CharlieDaTuna was a genius. I am very grateful to Cathy for continuing his legacy.

GlennS1956:

--- Quote from: Hank on November 10, 2018, 06:25:02 AM ---What is the purpose of this screw? Is it adjusting something?



--- End quote ---
That screw hole came in very handy when I installed my GRT-4G.  I had previously bought longer screws to adjust the sear lever with.  The 2.5M-8 worked for me.  When installing the CDT trigger I put a 10mm long screw into that hole as far as it would go.  It raised the sear lever high enough that I didn't have to remove the sear lever spring to install the trigger.

HPP-Mechanic:
Just letting everyone know; these triggers are still very much available. I ordered a 3 & 4 and had them in less than 2weeks. Good stuff!

H95Kidd:

--- Quote from: HPP-Mechanic on January 31, 2024, 06:45:24 PM ---Just letting everyone know; these triggers are still very much available. I ordered a 3 & 4 and had them in less than 2weeks. Good stuff!

--- End quote ---
HPP-- Did you install the GRT-4G trigger yet? If so, which model Gamo rifle? SAT or CAT trigger? Also, question for you, or anyone else that can opine on this---  What/how is the GRT-4G trigger doing to improve the trigger's mechanical action, that a simple replacement (with a slightly longer one...) of the 2nd stage adjustment screw, does NOT do? How does it improve the action of the trigger, from a mechanical standpoint, versus just replacing that screw to slightly decrease the sear lever travel (the component that actually HOLDS the piston)? I have NOT had one of the SAT or CAT triggers apart, completely off of the rifle, to view the internals of the trigger. So, I have no firm understanding of just exactly HOW installing the GRT-4G trigger WORKS with the existing Gamo trigger "internals" to improve the trigger pull, as opposed to just installing that longer 2nd stage screw. So, basically I'm saying that I DO understand what that 2nd stage adjusting screw does, but I DON'T understand what installing the GRT-4G does and HOW it does it. Anyone that cares to, please explain away...

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