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Posted: 9/10/2011 4:36:38 PM EDT
Anyone one USE the LMT Rear Iron..??
is it a 6/3 or 8/3.. and is setup relatively easy on a 14.5" Rifle?? (with pinned brake).. is it just zero at 25 (or 50 yards) on the 6/3 (or 8/3) setting and then just adjust up 'by number' per se?? my upper is a BCM Flat-Top 14.5" Middy.. 
should be here by Wed.. but figured I'd get some USER insight.. |
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I use them and like them. If you go to the FAQ section at the top of the page read the RIBZ thread by MOLON. It will talk you through setting these (and any other A2 style sight) set up for a 50 or 100 yard zero.
I personally just leave the elevation drum on 6/3 and zero at 50 yards. I start out at 25 yards and adjust my point of impact to be approximately 1 1/4 inch below my point of aim. Then I go back to the 50 yard line and fine tune everything. I don't see much use for the elevation adjustments except for on a known distance range, but I do prefer the A2 aperture (use the small, the large 0-200 is for low light/moving/gas mask shooting) to the larger A1. As discussed elsewhere, the 50 yard zero will never be more than +/- 2 1/2 inches from your point of aim out to approximately 225 yards, with the bullet dropping about 12 inches out to 300. If the target is large enough for me to see at 300 then I have a lot more than a foot to play with  .
If you haven't already bought the LMT BUIS check out the Daniel Defense A1.5. If I was looking for a new BUIS these would be my first choice, unless I found the LMT for less. Good luck and Stay Safe, Rob |
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Quoted:
Anyone one USE the LMT Rear Iron..?? http://www.executiveprotectionservice.us/forums/556/LMT.jpg is it a 6/3 or 8/3.. and is setup relatively easy on a 14.5" Rifle?? (with pinned brake).. is it just zero at 25 (or 50 yards) on the 6/3 (or 8/3) setting and then just adjust up 'by number' per se?? my upper is a BCM Flat-Top 14.5" Middy.. http://www.executiveprotectionservice.us/forums/BCM/BCMwithCBHG.jpg should be here by Wed.. but figured I'd get some USER insight.. -Sigh- Zeroing a rear sight is so easy, and yet so many people give incorrect instructions online. The LMT rear BUIS uses a 6/3 drum. That is what ALL detachable carry handles should have. Fixed A2 carry handle uppers should have 8/3 drums. (Excluding National Match sights) If you are using a Carbine, zero at 6/3 small gap at 25 METERS. If using a Rifle you can: Zero using 6/3 small gap at 36 YARDS -or- Zero using the z setting at 25 METERS I would recommend using a hex driver to adjust the rear sight drum so it bottoms out at 6/3-6. Instructions to do so can be found in the Santose's IBZO instructions. If done so, 6/3-4 will be approximately a 50/200 yard zero and 6/3-6 will be approximately a 100 yard zero. Note, the large aperture will have a different point of impact then the small aperture. When the drum is set to 6/3 small gap (300yard zero with the small aperture), if you switch to the 0-2 aperture you will have an approximate 200 yard zero. |
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Postal..
which is the correct way to set basic 6/3..?? it came like THIS from the factory and can't go ANY lower at all.. (notice its FLUSH with the mount)... 
or I can crank it around to 6/3 setting and I still can get it go upto the 550 Yard/Meter turn setting.. notice the sight has a small gap.. 
either way the allen head is to tight for me to get off without snapping my allen key.. just want to know which is the correct 6/3 setting to start with as a base.. |
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I use one and I like them. A lot of people don't like A2 style rear sights because they can be knocked out of adjustment.
Read this. Assume for the purpose of that thread that your LMT is really a detachable carry handle with a 6/3 rear drum. Follow the instructions and you are all set. |
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well in those pics it looks like 8/3 -4 is bottomed out on the base.. like my pic #1.. with the 6/3 FLUSH with the base..
so this still doesn't answer my question really.. FWIW I read 3 different ZERO's including that one.. again, my allen key is tooo tight to loosen.. I just want 50, 75, 100, & 200.. thats it.. I don't need a 100 ZERO.. I may have to start at 25 yards then.. anyone know.. the LMT mount allows you got AROUND 2x which compounds the starting point.. 
help  please
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Yes. I own one.
The sight as delivered will bottom out at the 6/3. Get a good key/wrench. It will move but LMT's are tight. They do not use loctite just a t-handle wrench so it won't come loose. If you need to use something that give you leverage to turn it. It will turn. Good means not flimsy. If you set it for RIBZ, and its at the 6/3 mark, it will no longer bottom out at the 6/3. It will bottom out when you rotate it down past the 6/3. There will be a noticeable gap when at the 6/3 when adjusted. I know several who make no adjustments to the sight. They zero at 25 yards at the 6/3. |
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Quoted:
I apologise for not being clearly. Bottomed out, or when the first time the sight hits 6/3 from the bottom is "6/3 Small gap" and that is your 300yard zero. Once you give it a full turn, that would be "6/3 large gap", that thats for 600 yard shooting. thanks to both of you.. now I get it.. I'll just ZERO at 25 yards/meters on the SMALL 6/3 (aka factory setting).. then I'll figure out 50 100 150 200 I don't have ANY $ right now.. I got a $6k project I'm trying to square up by spring and only $750 in the bank.. 
unless you can remember the number of clicks UP to get to them.. |
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@ Lancelot..
I set the mechanical zero for both front/rear.... Zero'd the LMT at factory BOTTOM 6/3 setting at 25 and 100 yards.. at 100 yards I am about 3 1/2" LOW and 2" to the RIGHT.. 
heres the 25 yard pic.. from today also.. 
I figure UP the front post about 1 full turn (I read the A2 FBS is 1/4 turn = 1/2") and gain the 2" and move the rear LEFT 5 clicks should do it... does this sound correct..?? I know it won't be perfect but I ran out of time today.. showing my 9yo son how to shoot a 22lr for the 1st time.. 
going back next weekend.. but any further help would be appreciated.. I'll be mainly shooting @ 100 and 200 yards standing/kneeeling after I get it dialed in at FBI QIT (reduced with 12" torso's).. |
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Follow the arrows. If you are shooting low and left, then you need to adjust up and right. Follow the arrows on the sights. I say that a lot.
If you need to move the group up, follow the arrow on the front sight to move up. If you need to move the group to the right, then follow the arrow on the rear sight to move the group right. Somewhere I have a cheat sheet that tells me how many clicks. I'll see if I can find it. |
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