Specifications

TM 05539-IN
MUZZLE BREAK MAINTENANCE - CONTINUED 0017 00
0017 00-6
TIMING WHEEL INSTRUCTIONS
1. Screw adapter onto muzzle until firmly hand tight.
2. Slide timing wheel over adapter with printed side facing toward you and printed TDC pointing straight up (12 o’clock
position).
3. With eyes in front of muzzle, note which timing wheel “pie slice” lines up with adapter indexing notch, and note the
shim listed on that pie slice. Installing those shims places notch in correct 6 o’clock position when adapter is properly
torqued.
NOTE
If adapter notch aligns with gray area of wheel after initial hand-tightening, you may not need shims.