Step 1 Put bolt into bracket hole Step 2 Align bracket to Vive Tracker as shown Step 3 Attach Vive Tracker tightly to bracket Step 4 Align groove on barrel sleeve to Tracker bracket groove as shown Step 5 Attach barrel sleeve to Tracker bracket and to lower barrel. Shim the barrel sleeve to fit a 20 gauge Step 6 Align the Tracker with the front sight. Re-align as necessary in game Step 7 Attach the trigger guard cover plate Step 8 Attach Velcro pad Step 9