This listing is for a new uprated main spring for the Nerf BASR-L dart blaster. This is a fairly easy upgrade that will give you faster dart speeds and greater range - all you need is a precision screwdriver and a few minutes to search YouTube to see how to disassemble your blaster and install.

Gun cocking takes more effort so not suitable for under 14s. Note - some blasters may require a stronger trigger release spring, dependent on age and wear to gun, which is not included in this kit.

This is not an official Nerf product and will most likely void any warranty on your blaster. Listing is for the upgrade kit only, not the blaster.

Shipping is either by tracked courier or Royal Mail 2nd class Small Parcel depending on size / weight / value.

Please take a look at my other auctions for other Nerf-related bits & pieces.

Disclaimer - when installed correctly this will noticeably increase dart speed and if not used responsibly may result in injury to yourself and others. I also suggest you check with your local police authority with regard to the legality of modified blasters - some of the higher powered ones may require a licence. Modify blasters at your own risk and always play safely! For ages 14+ only, parental supervision required and, as always, please wear safety goggles and long sleeves / trousers at all times. I will take no responsibility for any injury, damage caused or legal complications.