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PostPosted: Mon Jun 29, 2020 2:34 am 
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Joined: Mon Jun 29, 2020 1:59 am
Posts: 1
Hey everyone! I have fully put my foot in the “upgrade that old pellet gun” door and I have some questions

As of 2 days ago I took my step brothers crossman Optimus that has never been sited in, never put away etc, and decided I wanted to have some fun with it and turn up the power a bit.

Took the trigger box fully apart the first time “OOPS” so after reassembling that completely by trial and error for part placement (no one has videos of this part that I could find)
-I did lighten the trigger quite a bit.

When I finally figured out that the pin at the rear of the chamber was FREE and easily popped out upon being tapped, that’s nice.

So I got the spring, heated it up and gave it a couple good tugs.

1/2 inch plywood now doesn’t even get noticed when before it was bouncing off, I’m using those flat head pellets in this test.

Today I bought the same gun and did the same thing for my girlfriend XD but I’m just getting started, this is fun and I have 2 huge pieces of preoperty to plunk on.

My main goal is to get some sound opinions on springs I can buy for the Optimus that are around 1000fps, ideally I want to buy enough supplies to mod a few rifles or the same one over several years.

Sorry for a bouncy start, I feel all over the place haha. I’ve got tons of questions but mainly springs, but if anyone has any additional info, tips, interesting parts, fun projects, I’m super interested.


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PostPosted: Mon Jun 29, 2020 5:07 am 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1407
Location: Eastern Townships
Hi and welcome. Sorry to start with a boring question, but do you have your PAL (firearm license)? This is mandatory if you have or modify an airgun to shoot over 500 fps/4.2 fpe. A chronograph is most useful when ''playing'' with power/velocity.

I hear you on the Crosman Optimus, I have one and love it. The most beautiful wood stock of the Crosman/Benjamin springers line-up IMO. Easy to repair and to work on, and spare parts readily available through Gravel Agency/Crosman Canada: https://crosman.ca/cen/replacement-part ... osman.html

Have fun and STAY SAFE :)

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PostPosted: Mon Jun 29, 2020 7:10 am 
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Joined: Thu Oct 04, 2012 10:27 am
Posts: 1116
Location: Thunder Bay,On.
You want part number...B18-00-4D...full power spring fits other Crosmans also...Order from Crosman.ca...currently in stock...$14.56

P.S.....order 3 springs for various projects and get free shipping to your door

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