FWB 602 Short gate installation ...

[wquiles]

Ebay member nikonos sells a short gate for the FWB 60x rifles that allows for using a scope (which is how I want to use my FWB 602).  The new gate needs to be cut, but it took a little bit more work than I expected. 
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Here are the parts that come in the kit - the original gate is on the bottom:




The instructions are excellent:



Cut gate and clean it:







Everything fits great (so far).  Note the kit is actually fully ambidextrous - it can go on the right or left side of the rifle:



But I noted right away that the gate did not "locked" in the down position.  I can press it down with my finger, but comes up slightly once I remove my finger:



Upon reviewing things, I noted the problem was the pin diameter:





So I made a press spacer out of Delrin:














Now the gate fully engages and locks down in place (like the OEM gate did before):




With that out of the way, I tested the scope mount:







I needed it to move forward more, so I decided to "modify" it to give me more clearance:





Much better:





But I still needed it to move forward a little more, so back to the mill.  Here is how it looked after the second milling operation.  The scope still sits a little too far back, but it is OK for now:






Will

[T-Higgs]

wquiles, very nice work. I had some problems short gating my 603 because of the same issues. I'm not a machinist (wood guy) so I purchased a length of 5/32 brass tube to use as a bushing to make up the difference between the 3mm pin and the original 4mm pin. It's not perfect but it works.
Note of caution; if the gate doesn't fully seat, the hammer will hang up on part of the safety mechanism causing a no fife situation. Rifle will cock, trigger pull feels normal, but hammer gets stopped before striking the valve hard enough to actuate the valve. Just something to look for if you get a no fire problem.
I made a little aluminum gate handle to replace the plastic one the kit comes with. A gun that nice deserves better than white plastic. If I had your metal working skills, I'd make something nicer than I did. The 603 has the recoil absorber on one side and the charging handle on the other. Not much room to work with.

[wquiles]

Thanks for the kind words.  ALthough it is sad that you also had to modify your shot gate kit, I am happy you also found another way to fix it.  And yes, I also noticed that with out the mod, the rifle will not fire 

I must admit that the plastic piece looks cheap and plain, and I do like very much the custom aluminum handle you made - gives me a few ideas 

Will