Does the KM-HEAD Inner Barrel 6.04mm fit the WELL Warrior L96?

[Which gun????]

Hello there,

 

I have a WELL WARRIOR I L96 sniper rifle which has stock parts. I was wondering around to find some upgrades and i came to a conclusion. I wanted to get these upgrade parts:

-KM-Head Inner barrel 6.04mm (link: https://www.zerooneairsoft.com/product_info.php?products_id=9094)

-Laylax SP80 Spring (FPS limit is 350fps so that why im getting this) (link: https://www.zerooneairsoft.com/product_info.php?products_id=5391)

-Nineball Laylax Air Seal (link: https://eagle6.co.uk/shop/catalog/product/view/id/570/s/laylax-nineball-wide-use-air-seal-chamber-packing-for-vsr-gbbr-gbb-series/)

 

Can these upgrades fit my sniper, are they compatible with it and is it worth it?

 

Thx for looking, hope someone responds to me ASAP...