Pressurized air blows contaminants back into the breathable air and over all exposed surfaces in the immediate area. Air hoses can be detrimental to hearing. Air hose nozzles should be OSHA approved for noise reduction. Ear protection may be required depending on the number of air hoses being used at one time.
WARNING: Continuous dipping of handguns into strong chemical solutions, such as a part cleaner, and then blowing the mechanisms dry with an air hose will remove the protective lubricants from the handguns, particularly the internal parts. This will require an Armorer to completely disassemble the handgun to inspect and lubricate the entire weapon.
Now that your pistol is cleaned, the next step is to lubricate. The purpose of lubricating a handgun is to provide a molecular barrier between metal parts to reduce friction and prevent solidification of firing residue. A lubricant / preservative is used to maintain the integrity of the finish through a similar molecular barrier between the handgun's surface area and its environment. Semiautomatic pistols require lubrication in order to ensure consistent, reliable functioning. Conversely, excessive lubrication may affect reliable function of the weapon. Excessive lubrication is recognized as lubricant moving on the weapon under the influence of gravity. Manufacturer's guidelines on lubrication should be strictly adhered to. The specifics of the guidelines may be found in the owner's manual, Armorer manual or through correspondence with the manufacturer. Environmental extremes such as coastal salt air, humidity and broad shift in temperatures expose unprotected metal to attack, requiring frequent attention with a lubricant / preservative versus a desert environment where the natural attraction of dust and grit to the lubricant becomes a negative factor. Lubricant /preservative products are available in a number of different consistencies that range from grease, to liquid, to dry, all of which have application. Be sure you read the manufacturer's directions for use and evaluate your own needs pertaining to the actual application of the handgun. A weapon is not considered properly lubricated unless the lubricant’s presence can be visually and physically verified by the operator. (You should be able to see it and feel it on the treated surface.)
Start the procedure by using a nylon brush with a lubricant, preservative or similar material to dissolve and remove any firing residue in or on the frame. Pay particular attention to the magazine well, frame rails, and surfaces that interlock with the barrel. Once the frame is clean it should be lubricated by saturating a cleaning patch with a lubricant / preservative and wiping all exposed metallic surfaces. Give emphasis to lubricating the frame rails and the surfaces that interlock with the barrel. Wipe exterior of the frame with a clean patch to remove any excess lubrication.
Next, thoroughly clean the barrel using a bore brush of the correct diameter that has been moistened with cleaning solvent. Use a cleaning rod long enough to reach all the way through the bore. The brush should pass completely through the barrel, starting from the chamber end, at least ten (10) times in a reciprocating fashion. Emphasis should be placed on the cartridge seat located at the forward edge of the chamber. Cleaning the cartridge seat can be enhanced by twisting the cleaning rod and turning the brush while it rests against the forward edge of the chamber.
NOTE: Always clean the barrel from the chamber end when possible. Allow the cleaning solvent sufficient time in the barrel for the chemical action to dissolve the fouling. Read and apply the solvent manufacturer's recommendations.
Replace the bore brush with a slotted patch holder or jag and affix a clean, dry patch. For maximum effect the cleaning patches should fit the bore snugly. Push the patch slowly and carefully through the barrel. Repeat this process with clean patches until the barrel is clean and dry. Brush any remaining residue from the barrel giving specific attention to the feed ramp, forcing cone, and chamber mouth areas. Most manufacturers recommend that the barrel be lubricated on its interior and exterior for friction reduction and surface preservation. This may be accomplished by saturating a cleaning patch with a lubricant/preservative and wiping all surfaces of the barrel. Finish the barrel by pushing a final clean, tight fitting patch through the bore to remove any excess lubricant, which may contribute to ammunition failure.