SMK XS 501 Front End with the Dome Cap in Stainless Steel Front body and Heavy Duty O ring. also includes the relief valve and grub screw, and Spring, and spring retainer. Photo shows the standard one below for comparison. (note it includes allen grub screw to release low residual pressure to refill and prevent the cap from blowing out of your hand.

I have added the option to add the Front Ring in Stainless Steel, and also the Front Dome Cap. You can add these if required under the add on options or add on tab.

I have
Photo shows the Stainless Steel front cap Front body and front ring (diamond knurled) fitted and the third picture left shows the standard plastic one underneath. I have now added the option of two O ring seals for an extra £2.50 (see Photo), if required then please select under the drop down tab.

The later 501s is Plastic with a double O ring that is prone to leak as the pressure pushes it outwards, this can deform and leak. This is a weakness on the new 501s but is easy to fix with this part. I have done some with two grooves for two O rings now, but mine do not leak even with only one groove and O ring.

This price is a bargain. Special introductory price.
Now also named Rabbit Destroyer