• Win an RIX Storm S3 Thermal Imaging Scope!

    To enter, all you need to do is add an image of yourself at the range below! Subscribers get more entries, check out the plans below for a better chance of winning!

    Join the contest Subscribe

Magnesium or very lightweight rifle chassis

Those two are really the lightest I've found ; You can find the XLR carbon used for quite a bit less, it isn't quite as light but its still pretty light.
 
The hunt26 dampens vibration better than a xlr magnesium. If folder isnt an absolute must, I'd get the new manners LRH with carbon arca rail and carbon mini chassis.
 
Might be a bit pricier, but the Q SideChick chassis is extremely lightweight (about 2.5 lbs) for what it offers. I've got a .223 barrelled action in mine, and it's excellent. Incredibly adjustable, without feeling like a boat anchor or a canoe paddle in form factor.