1. Christian Harchelroad

2. The direct impingement system introduces heat and vaporized metal to the bolt. 

3. The Most Cost Efficient Solution to the M-4 is the HK416 rifle lubricated with a dry lubricant. Photo Credit: hkpro.com

4. The Main Points I Will Be Covering Today. 1.The HK416 is extremely reliable thanks to the gas piston system. 2. A dry lubricant will eliminate the possibility of dust clinging to the weapon. 3. This is all cost effective because you only have to buy part of the rifle.

5. The Short Stroke Piston system vents the harmful propellant gas and heat out of the weapon. Photo Credit: gaiaonline.com Joe Pappolardo, Popular Mechanics HK User Manual

6. Real World Testing Proves the Short Stroke Piston System Works.

7. A “dry” lubricant bonds to the weapon and does not allow dirt or sand to stick to the rifle. Photo Credit: Militec-1.com

8. Militec-1 reduces operator cleaning time. Militec, “CLP ‘wet’ lubricant vs. Militec ‘dry’”

9. The American tax payer would only need to buy half of a gun. USA Today, Richard Lardner