Bisley Titan XS Mainspring No.1 Air Rifle Spring brand_-HSF with an improved latching system

with an improved latching system ensuring batteries and internal controls are nice and secure (the addition of a padlock hole lends an added level of security)

breathable membrane keeps feet dry in wet ground and showers without the boot feeling clammy over a long walk

keeping the boot cooler and lighter than a traditional full-leather design while still standing up to daily wear

Adjustable sleeves and bottom hem

Bisley Titan XS Mainspring No.1 Air Rifle Spring brand_-HSF with an improved latching systemThe Bisley Titan XS Mainspring No. 1 is a replacement mainspring for spring piston (break barrel and underlever) air rifles, part of the long running Titan XS range of uprated UK made air rifle springs. The "No. 1" is the Titan application number that tells you which rifles the spring suits: it is listed to fit the BSA Airsporter, Mercury, Challenger, 635 Magnum, Superstar, Lightning, XL, Supersport, Goldstar and Centenary, along with the Air Arms