HHD 53rd Transportation Battalion
7th Sustainment Brigade
Fort Eustis, VA 23604

HHD 3rd Platoon Weapons Maintenance SOP
AFD-Q6FG 10-0013

Effective Date 29 October 2013

1. PURPOSE: To address the clearing, disassembling, cleaning, inspection for serviceability, lubricating and reassembling of the M4 or M4A1 carbine.

2. APPLICABILITY: 3rd Platoon, HHD 53rd Transportation BN.

3. REFERENCES: Lubricate Order (LO); STP 21-1-SMCT; TM 9-1005-319-10; DA Form 2404 Equipment Inspection and Maintenance Worksheet.

4. RESPONSIBILITIES: You are to complete three copies of DA
(a) Grasp the lock lever in the area of the retaining nut.
(b) Pull downward.
(c) Slide the buttstock to the rear.
3. Clean the weapon.
Note: CLP is used to identify when lubricant is needed, however it can be replaced with LSA
(weapons lubricant oil, semifluid), or LAW (lubricating oil, arctic weather) as applicable.
Do not mix lubricants on the same weapon. The weapon must be thoroughly cleaned using dry cleaning solvent (SD) when changing from one lubricant to another. a. Clean the bore.
Note: The bore of your weapon has lands and grooves called rifling. Rifling makes the bullet spin very fast as it moves down the bore and down range. Because it twists so quickly, it is difficult to push a new, stiff bore brush through the bore. You will find it easier to pull your bore brush through the bore. Also, because the brush will clean better if the bristles follow the grooves (called tracking), you want the bore brush to be allowed to turn as you pull it through. (1) Attach three cleaning rod sections together.
(2) Swab out the bore with a patch moistened with CLP or RBC.
(3) Attach the bore brush.
Note: When using bore brush, don’t reverse direction while in bore.
(4) Point muzzle down.
(5) Hold the upper receiver in one hand while inserting the end of the rod without the brush into the chamber.
(6) Let the rod fall straight through the bore.
Note: About 2 to 3 inches will be sticking