Weihrauch HW99/50/57 MAXI Tuning Kit

All the benefits of a standard TbT kit, but custom fitted to the supplied Premium TbT Spring. Comes with fitted delrin spring guide with a top hat, slip washer and 2 preload washers. This kit also comes with Lithium based Molybdenum Disulphide grease and abrasive paper as well as instructions for fitting kit and piston sleeve.

This kit includes the 29 coil TbT premium spring, perfect for most guns. The longest spring that will fit the HW50/99 is our 31 coil,  due to slight variances gun to gun a coil may need removing for this to work and/or be under 12 ft-lb. If you would like the 31 coil spring instead please contact us BEFORE placing your order

This may increase power, chrono required! Full instructions on spring shortening available in “Instructions”