Latest from STRC:

Hot on the heels of our Associated B5 weight reduction kits, these TLR 22 2.0 and 22-4 weight reduction kits features the same light weight titanium screws and aluminum lock-nut hardwares that will drastically reduce the weight of your TLR machines. The titanium screws are coming in at about half the weight of their steel counter parts while the aluminum lock-nuts are less than half the weight of the steel ones. The aluminum lock-nuts are also available in gun metal anodizing to match the color of TLR factory option parts. The TLR 22 2.0 screw kit includes screws for both mid and rear motor configuration.

The TLR 22 2.0 weight reduction kit (87 pcs set) features: 75 pcs of Flat-head and Button head titanium screw, 12 pcs of blue anodized aluminum lock-nuts (M4 and M3 size) MSRP: $39.99 Part #: STTLR-22-2

The TLR 22-4 weight reduction kit (63 pcs set) features: 47 pcs of Flat-head and Button head titanium screw, 16 pcs of blue anodized aluminum lock-nuts (M4 and M3 size)
MSRP: $32.99 Part #: STTLR-22-4

Weight reduction kit soon to be available for TLR 22 SCT 2.0 as well.