the US military is 25 meter zero target simulates a 300 meter ISA lumen target once you zero your rifle with this target you will be able to effectively engage targets within 300 meters with very little elevation adjustment bear in mind the DPMS zero target is designed for a 20 inch sight radius if you are shooting a carbine you may have to make smaller adjustments mechanical 0 on milspec iron sights is described as making your front sight post flush with the front side base and setting your rear sight elevation to either six thirds or eight thirds depending on your type of sight and setting the rear side windage Center using this method every time well more often than not get you on paper and set you up for easy adjustments remember with a 20-inch sight radius you want to set your rear elevation knob to six thirds or eight thirds plus one or in other words on the Z setting the zeroing process should be done with as much stability as possible the best way is to accomplish this is by either shooting from the prone position on a bench with sandbags or with a Ledge slightly remember to use proper shooting fundamentals breathing there are many methods to proper breath control the most common is firing at the bottom of your exhale you should take one or two control breaths then at your last exhale hold fire then inhale trigger squeeze again there are countless methods but the most common is the use of the pad of your trigger finger squeeze until the rifle recoil you should not anticipate the shot it should to some degree surprise you and remember to follow through with your career squeeze to ensure you don't pull the shot sight picture a good way to ensure that you get the same sight picture every time is putting the tip of your nose on the charging handle you want the top of the front sight post to rest center mass on the e silhouette target each time you fire once you are comfortable shoot your first three rounds go downrange and inspect the target the target will show you by your point of impact which adjustments you need to make to hit center mass on this round we need to adjust the elevation clockwise seven clicks and the windage counterclockwise five clicks make your adjustments to your front and rear sight there are tools available to make your front sight adjustments easier once you have made your adjustments fire three more rounds and inspect the target it should be either on center mass or closer if you are close but not on make additional adjustments or fire three more rounds and check again if you are on center mass fire three more rounds for confirmation and inspect the target if your confirmation rounds are on center mass your rifle is now zeroed it may be a good idea to record your adjustments in case you pick up a new weapon you will have a good idea where to start when zeroing thank you for your time and if you have any questions please give us a call here at DPMS at one eight hundred five seven eight three seven six seven or visit us on the web at WWDC MSI NC comm