If the wind isn’t there the next day, then your conditions have changed. Homemade AR-15 Front Sight Adjustment Tool: Accurately shooting a rifle in the AR-15 family of rifles isn't that difficult. When adjusting the front sight, the opposite applies. The 50/200 and similar type zeroes are nothing but a myth. That Kitty Kat we pictured up there? They feature a dioptic rear sight and an M4 type front sight. 4. His work has appeared in the "Tailwind," the local publication for Travis Air Force Base in California, as well as on several websites. It’s a common mistake to zero at 25 meters or 50 meters and assume that you’re also good to go at 300 or 200 meters, respectively. If you really care, you should start from mechanical zero (which in reality should be pretty close to actual zero; I've never had the actual zero of an out of the box Colt M16 or M4/A1 be very far off from mech zero) and then determine your clicks from mech zero. To move your groupings to the left, turn the windage knob on the rear sight to the left and to the right to move your grouping to the right on the target. Basically, if you want your shots to appear on the target you will want to move the rear sight in the direction, and front sight in the opposite direction. If the shots appear all over the target and aren’t in groups, focus on the shooting fundamentals until you achieve groups. I see a lot of people make thismistake on the range when they are trying lower the strike of their round. Then, don’t forget to move the rear sight that number of clicks from one of the sides. According to Colt an M4 is 1.2 cm at 25 meters, with the small aperture up in the rear sight. The large aperture is used for close up shooting has a line that can be used to align it with hash marks along the bottom of the rear sight. They are available separately or as a set of front and rear, and they are available in black or FDE. Now there is a front sight windage adjustment tool that can be used, and this tool requires that the front cap be removed to align the tool with the front sight. The front sight post is moved up or down when zeroing the rear sight. The Front Sight Adjusting tool was purchased through my local gun shop, but the manufacturer is Numeric Gun Parts Corp. Based in Sacramento, Calif., Russel Langley has been writing professionally since 2006. Looking from the top of the sight, the front sight post will need to be turned clockwise to raise groupings and counter-clockwise to lower them as they appear on the target. On my No. Adjust the elevation knob on the rear sight-assembly to raise or lower the group of shots on the target. The key ring serves as a handle and helps keep the small tool accounted for. The actual amount of movement per click of adjustment depends on the distance between the front and rear sight. If you zero your rifle in a 10-mph crosswind, then that’s your zero. No matter the weapon you use, test-fire it first, then adjust your sight. There are commercial tools available that are of… Fire five rounds of ammunition at the center of the zero targets. For example, the USGI adjustable rear sight found on the M16A4 and M4 has half MOA clicks. Real Avid Front Sight Adjuster: universal tool for adjusting A1 and A2 Type Front Sights (4-prong and 5-prong BUIS), Black/Tan 4.6 out of 5 stars 1,352 $9.99 $ 9 . Though many shooters these days use budget, Hey I’m Elizbeth Smith. Thanks! 4. To set the front sight post to initial sight setting, depress the front sight detent and rotate the front sight post until the base of the front sight post is flush with the front sight housing. 4 this is held on with one slotted screw. The longer that distance the smaller the point of impact moves for each click of elevation or windage. Then you have to lower the front sight-post by turning it clockwise. Depending on the type of gun, you may be able to adjust either the front or rear sight, or you might have to make adjustments to both. Once the iron-sights are zeroed you can start adjusting them for accuracy. The front sight is confusing me. Langley holds a Bachelor of Arts in English from The Union Institute. Rotate the click wheel on the tool clockwise to lower the post and counterclockwise to raise the post. Before I go buy a wrench wanted to see if that something that can be adjusted by loosening the nut. Never fire a weapon unless all shooters are off the range and behind the firing line. The zeroing process involves sighting the rifle to mechanical zero. If at 50 yards your hitting that high, I would raise the front sight post 10-12 clicks to start and do fine adjustments from there. It is machined from steel and has a black zinc finish to last for years. So, to get the most out of your rifle, you need to know how to zero an M4 with iron sight. The Carry handle of an M16A4 and M4 carbine is a 1/2 minute adjustment but the shorter sight radius of the M4 makes it a little harder to memorize the rear drum changes… but not too much. An M4 is a 14.5 inch barrel. Wear necessary hearing and eye protection while shooting. Most people zero their sights for a baseline and then compensate for any changes. Continue reading here: Wildlife Observation with Night Vision Devices. Align the "6/3" mark on the elevation wheel with the index mark on the carrying handle. I have a new set of Troy HK-style sights for my AR rifle for BUIS. The front sight handles elevation, or how high or low the point of impact is compared to the point of aim. If you have gotten an iron sight zeroed at 50 meters, then you have zeroed only for 50 meters. Also, don’t forget to adjust the elevation knob on the rear sight-assembly to raise or lower the group of shots on the target. From the factory it seems a little cocked off to the right like this /. Fire five rounds of ammunition at the center of the zero target. Windage adjustments are made with rear sight. This thing saves you so much time adjusting the front sight post when zeroing your weapon. You can see that the A2 rear sight elevation is easy to memorize, but also very course in its adjustments. Adjust front sight for elevation only. The front sight faces the same problem. If the aperture doesn’t have a mark, simply rotate the windage knob until the aperture is all the way to the left or right. No idea how it … The rife must also be zeroed to the shooter. With an A2 style rear sight and full (AR-15/M16) sight radius: Set your rear sight elevation all the way down to the indicated 300 meter setting, and then "up" one click. First Load the weapon with five rounds. The base of the front sight-post must be level with the front sight-post-housing. Once that is done, move on to the rear sight. Adjusting the sights on an M4 can be done using your fingernail or a round of ammo but get it done much quicker, easier and safer with the M4 SAT sight adjustment tool. Hope the article was helpful and worth reading for you. An A2 rifle is 1.25 inches at 100 yards, 5 MOA for 1 complete revolution.