AR Sponsor
Posted: 6/1/2010 3:30:27 PM EDT
| hi, going to put on an eotech on my flattop. have any of you had any trouble with boresighting?( i.e. having to somehow shim it so you don`t run out of adjustments) i was hoping i could just mount it and not have to worry about taking the windage and elevation adj. to far in either direction when shooting it in. ( don`t want to ruin the scope) |
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1. zero your iron sights
2. put the red dot on 3. lollypop it (adjust the red dot until it sit on top of the front sight post) 4. zero the eotech this will ensure that while shooting with the eotech you will hit paper the first time. you shouldnt have any problems |
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1. zero your iron 2. put the red dot on 3. lollypop it (adjust the red dot until it sit on top of the front sight post) 4. zero the eotech this will ensure that while shooting with the eotech you will hit paper the first time. you shouldnt have any problems no irons on this. pure flattop with yhm rail and rail gas block. may buy MI`S flip-up buis set later. |
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hi, going to put on an eotech on my flattop. have any of you had any trouble with boresighting?( i.e. having to somehow shim it so you don`t run out of adjustments) i was hoping i could just mount it and not have to worry about taking the windage and elevation adj. to far in either direction when shooting it in. ( don`t want to ruin the scope) Never heard of anyone having any such issue. I would suggest that if you run into this your rifle needs to be rebuilt as the barrel or something is out of spec. |
| If you put an EOTech on the flat rail of an AR-15 upper receiver, you will have no trouble getting it sighted. You save time and money (plus get an interesting tool to keep for other applications) if you pick up a chamber laser. You chamber it, put the laser dot on something about 30 yds away and adjust the EOTech dot to match the laser dot. Then, in the field, you can modify the zero point as you see fit. In the meantime, the rifle will have a 'battlesight zero' so it can be used without the final adjustment. |
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hi, going to put on an eotech on my flattop. have any of you had any trouble with boresighting?( i.e. having to somehow shim it so you don`t run out of adjustments) i was hoping i could just mount it and not have to worry about taking the windage and elevation adj. to far in either direction when shooting it in. ( don`t want to ruin the scope) Never heard of anyone having any such issue. I would suggest that if you run into this your rifle needs to be rebuilt as the barrel or something is out of spec. not having any trouble. just read a post somewhere that a guy had an issue and had to shim the sight. hoping i don`t have the same. |
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hi, going to put on an eotech on my flattop. have any of you had any trouble with boresighting?( i.e. having to somehow shim it so you don`t run out of adjustments) i was hoping i could just mount it and not have to worry about taking the windage and elevation adj. to far in either direction when shooting it in. ( don`t want to ruin the scope) Never heard of anyone having any such issue. I would suggest that if you run into this your rifle needs to be rebuilt as the barrel or something is out of spec. not having any trouble. just read a post somewhere that a guy had an issue and had to shim the sight. hoping i don`t have the same. You're putting the cart before the horse. You read a post "somewhere" about "a guy" who had an issue. Who the hell knows what he had, what he was putting it on or if he had it on backwards. It was probably some gun show fake piece of crap. I've got 4 of them, and they have ALL been damn-near dead-on out-of-the-box. If for some reason a real EO won't zero, there's something wrong with the rail, barrel or something other than the sight. If this WAS a problem, it'd be well-known. Just make sure you have a REAL one....the fakes are everywhere. |
| Put a big cardboard box with a dot on it about 20 FEET in front of the rifle. mount just the upper in a vise and look through the bore to get the dot centered in the bore. adjust the eotech until it is in line with the dot windage wise and a few inches low. Mount the upper on the lower and fire the shot. check. adjust primarily for windage at this distance. move the cardboard back to 25 yards and sight it in. If you want it on at 100 yards, you can then go out to that far, you'll be about 3-4 inches high if you're on at 25. but you should be close to on the money with the windage. For every inch you're off at 100 move the sight 2 clicks. ( I think it's half moa adjustments), so if you're 4 inches off, move it 8 clicks at 100. |
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hi, going to put on an eotech on my flattop. have any of you had any trouble with boresighting?( i.e. having to somehow shim it so you don`t run out of adjustments) i was hoping i could just mount it and not have to worry about taking the windage and elevation adj. to far in either direction when shooting it in. ( don`t want to ruin the scope) Never heard of anyone having any such issue. I would suggest that if you run into this your rifle needs to be rebuilt as the barrel or something is out of spec. not having any trouble. just read a post somewhere that a guy had an issue and had to shim the sight. hoping i don`t have the same. You're putting the cart before the horse. You read a post "somewhere" about "a guy" who had an issue. Who the hell knows what he had, what he was putting it on or if he had it on backwards. It was probably some gun show fake piece of crap. I've got 4 of them, and they have ALL been damn-near dead-on out-of-the-box. If for some reason a real EO won't zero, there's something wrong with the rail, barrel or something other than the sight. If this WAS a problem, it'd be well-known. Just make sure you have a REAL one....the fakes are everywhere. its a real one. factory new $400. bought it from swfa. just to let you know, shot it in today. you were right! at 50 yds. it was about an 1/2 high. dead-on centered. |
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