500
Explain, IN DETAIL, the procedures to proper clear an M4 Rifle...
1. Point the weapon in a safe direction
2. Ensure weapon is on SAFE
3. Drop the magazine
4. Pull the charging handle and lock the bolt to the rear
5. Observe round eject
6. Observe the chamber and bolt face for any rounds, dirt, or debri (if any is present, remove it)
7. Lock the bolt to the forward position
8. Move the selector switch from SAFE to SEMI
9. Keeping the weapon pointed in a safe direction, squeeze the trigger. The hammer should fall.
10. Pull the charging handle to the rear and release one time
11. Place the weapon back on SAFE
12. Close the ejection port cover