Silverback SRS Teflon Spring Guide (Pull Bolt)

Silverback SRS Teflon Spring Guide (Pull Bolt) CNC stainless steel construction Teflon tube covered Japanese thrust bearing base Essential Parts to built a durable and powerful upgrade Ball Bearing reduce friction of the spring, make the bolt action running smoother on each shoot Spring guide for SRS pull bolt As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed