Safety & Maintenance Instructions
DDM4
®
/ DD5
®
MANUAL P 33
BARREL CLEANING PROCEDURE
1. Remove the magazine, place the weapon on safe, and make sure that the chamber is
empty.
2. Remove the upper receiver from the lower receiver by pushing out the takedown and
pivot pins.
3. Remove the bolt carrier group and charging handle from the upper receiver.
4. Apply a high-quality bore solvent (Kano Kroil recommended) to the Hoppe’s
BoreSnake forward of the brush.
5. Holding the upper receiver group vertical, muzzle down, take the weighted end of the
BoreSnake and insert into the barrel from the breech. Allow it to pass through the
bafe core of the sound suppressor and out the muzzle.
6. Pull the BoreSnake through the barrel, and repeat 2-3 times (or as necessary).
7. Apply a small amount of high-quality gun oil to the tail of the BoreSnake and pass
through the barrel a nal time.
WARNING: DO NOT USE A CLEANING ROD AND PATCHES TO CLEAN THE
BARREL WITH THE BAFFLE INSTALLED. YOU MAY DAMAGE THE BAFFLE CORE
OR LEAVE PATCHES IN THE SUPPRESSOR ASSEMBLY. IF A CLEANING ROD
MUST BE USED, REMOVE THE BAFFLE FROM THE SUPPRESSOR.
WARNING: MAKE SURE THAT THE MAGAZINE IS REMOVED AND THAT THE
FIREARM IS UNLOADED SO THAT IT CANNOT BE FIRED.
WARNING: WEAR SAFETY GLASSES AND CHEMICAL-RESISTANT GLOVES.
5.6.1
BARREL CLEANING PROCEDURE (CLEANING ROD, BAFFLE
REMOVED)
IMPORTANT: THIS PROCESS SHOULD ONLY BE USED IN THE EVENT THAT
THE BORESNAKE CLEANING METHOD FAILS TO ADEQUATELY CLEAN THE
BARREL OR THERE IS AN OBSTRUCTION (DIRT, DEBRIS) IN THE SUPPRESSOR
BORE THAT CANNOT BE EASILY REMOVED. THE DDM4ISR SOUND SUPPRESSOR
DOES NOT REQUIRE REGULAR CLEANING AND WILL FUNCTION WITHOUT
DEGRADATION IN SOUND REDUCTION FOR MANY THOUSAND ROUNDS.