Prior to field stripping barrel assembly check Collar for looseness

Check for compliance with annual gaging requirements (headspace as minimum). Notify Direct Support Maintenance for scheduling of annual gaging.

Check Barrel (1) for bulges, cracks, bends, burrs, obstructions or pits in chamber and bore, and loose front sights. Inspect Collar (2) for cracks or burrs. Make sure Compensator (4) is not cracked and fastened securely. Grip (5) should not be cracked or missing. Handle (6) should not be bent. Pull back on Handle (6) to make sure spring is not missing or weak.

Barrel assembly damaged. Suppressor cracked or loose.

NEW MONO BLOCK STYLE BARREL
M249 Barrel Collar
-tfS- OLD STYLE BARREL

Item No.

Inter -val

Man-Hour

Item To Be Checked or Serviced

Procedure

Not Fully Mission Capable If:

Heatshield Assembly

Check heatshield for bent, broken or missing components.

Bent, broken or components missing.

Buttstock/

Buffer

Assembly

NOTE

Some heat distortion or charring may be observed on the outer non-metallic portion of the heatshield assembly and is not cause for replacement.

Check Buttstock and Buffer Assembly (1) for cracks, breaks, or missing components. Ensure Shoulder Rest (2) locks in both positions.

Cracked, broken, or components missing.

Bent Machine Gun Barrel

Push in on Buffer Plunger (3) to make sure spring is not broken or weak. Check for oil leaks on face of backplate.

Spring broken, weak, or has leaks.

Item No.

Inter -val

Man-Hour

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