I have a Bushnell 1.75 - 4X40 on top of my Ruger SR556. Pictinay rail system.To get the eyepiece above the rear flip up sight, folded in the down posi I have a Bushnell 1.75 - 4X40 on top of my Ruger SR556. Pictinay rail system.To get the eyepiece above the rear flip up sight, folded in the down position, I had to mount it with the scope rings on an extension. Are these rings high enough to get the eyepiece over the rear sight without this extension piece? I have a Bushnell 1.75 - 4X40 on top of my Ruger SR556. Pictinay rail system.To get the eyepiece above the rear flip up sight, folded in the down posi I have a Bushnell 1.75 - 4X40 on top of my... » Read More I have a Bushnell 1.75 - 4X40 on top of my Ruger SR556. Pictinay rail system.To get the eyepiece above the rear flip up sight, folded in the down posi I have a Bushnell 1.75 - 4X40 on top of my Ruger SR556. Pictinay rail system.To get the eyepiece above the rear flip up sight, folded in the down position, I had to mount it with the scope rings on an extension. Are these rings high enough to get the eyepiece over the rear sight without this extension piece? « Show Less
1007712
It really depends on the height of your rear sight when folded down. In order to clear you would have to have a low profile rear sight to clear your scope
1737970
This mount is designed to give a low profile type fit with the scope mounted. There isn't much room left for flip down sight but it would also depend on exactly which sight you'd go with. Most however, won't work.
1419277
I have mine set close to 6" but there is a reverse picatinny rail on the bottom-front of the scope which allows you to reduce its footprint. To lift the scope higher, just add a riser... Great quality, and great value!!!
2196048
I have a similar sight, same style, different brand name. This riser gives the actual red dot a height of 1.5 inches above your flat top. Also,the 5 slots line up to the exact length of the mount on the bottom of the sight. Hope that helps.
161951
If you are mounting this front flip up sight on a (flat top weaver rail) it will be perfect for a rear sight such as a (carry handle rear sight). It measures 1-1/2" from the top of the weaver rail to the very top of the overall sight, wich is above the sight post that you will use for sighting in your weapon. I have this flip up sight on my flat top(ar15) and it works great. I have a carry handle rear sight, and a flip up (low profile) front utg sight. IF you are getting this sight to flip down so you can use optics you'll be fine. Be careful because... utg also makes a flip up sight that is not a (LOW). It all depends on the rear sight. Good luck!
523488
This is to help other Ruger AR556 owners. I apologize posting in this thread. 1" riser did not work for me. It's too high. I'm going to try 0.83 next.
902443
The sights extend 1 3/8" above the top of the rail. I have a similar type iron sight on my Rock River SWAT rifle that cost quite a bit more than these. Have put many rounds through both rifles. These sights work just as well as my more expensive ones. Only problem I've seen is the sight adjustment screw on the rear sight is very easily turned which could come off zero. A little lock tight would fix this. All in all these are a great purchase for backup sights.
425936
The eye relief is too short to use a flip rear sight. However, being an old guy, don't need iron sights. Try using the 45 degree side mounts for you iron sights. Go 3 gun set up. Excellent scope for the money!
1639485
I wanted to mount front sight on gas block rail too, tried it, but mine sits lower than the top rail so alignment was a problem. Checked it with laser bore and way off. I have collapsible back up sight at the end of my top rail so that space is spoken for.So I mounted mine on the top rail right behind the front back up sight, rail even with the rear sight. The rear and front are fairly close together. I'm limited on rear sight location due to scope so I'm about 6" from peep hole to pin on the top rail, but they line up pretty good with laser sight. I would use for 50 yds or less. Still need to sight in with ammo but it's 4th in priority. I wanted to mount front sight on gas block rail too, tried it, but mine sits lower than the top rail so alignment was a problem. Checked it with laser bore and way off. I have collapsible back up sight at the end of my top rail so that space is spoken for.So I mounted mine on the top rail right behind the front back up sight, rail even with the rear sight. The rear and front are fairly close together. I'm limited on rear sight location due to scope so I'm about 6" from peep hole to pin on the top rail, but they line up pretty good with laser sight. I would use for 50 yds or less.... » Read More I wanted to mount front sight on gas block rail too, tried it, but mine sits lower than the top rail so alignment was a problem. Checked it with laser bore and way off. I have collapsible back up sight at the end of my top rail so that space is spoken for.So I mounted mine on the top rail right behind the front back up sight, rail even with the rear sight. The rear and front are fairly close together. I'm limited on rear sight location due to scope so I'm about 6" from peep hole to pin on the top rail, but they line up pretty good with laser sight. I would use for 50 yds or less. Still need to sight in with ammo but it's 4th in priority. « Show Less
225241
It depends on how high up your red dot optic is above the rail. You can easily get a riser rail for a few bucks if it doesn't.
2250093
Yes, the picatinny is how it is mounted. As for the sights, it would be totally dependent on what kind of scope you are using. I personally used a Bushnell 3x9x40 with this riser and my sight lens had roughly 1/2'' clearance above my rail.
1035383
I'm not clear what it is you're asking. I found the optic ok as is to picany rail. If you need to raise the optic higher, then that depends on you, i.e. Your eye level to rail.
1891319
IMO, you should use a 1 piece scope mount. Burris P.E.P.R. 30mm mount or similar. I use the Aero Precision ultra light extended mount. JoeBobOutfitters has it for 79.00. The Aero Precision website also offers them, and has frequent sales. Last week they had it for 59.00.With the big eye relief on this scope it generally needs to be mounted pretty far forward, and rings are not a good way to do it as the front ring will end up on the handguard. Check out one piece mounts! Primary Arms sells a cheap one if you are low on cash. I believe it is around 39.00. Hope this helps!Edit: meant to also say not sure any mount will clear a fixed A2 rear sight. IMO, you should use a 1 piece scope mount. Burris P.E.P.R. 30mm mount or similar. I use the Aero Precision ultra light extended mount. JoeBobOutfitters has it for 79.00. The Aero Precision website also offers them, and has frequent sales. Last week they had it for 59.00.With the big eye relief on this scope it generally needs to be mounted pretty far forward, and rings are not a good way to do it as the front ring will end up on the handguard. Check out one piece mounts! Primary Arms sells a cheap one if you are low on cash. I believe it is around 39.00. Hope this helps!Edit:... » Read More IMO, you should use a 1 piece scope mount. Burris P.E.P.R. 30mm mount or similar. I use the Aero Precision ultra light extended mount. JoeBobOutfitters has it for 79.00. The Aero Precision website also offers them, and has frequent sales. Last week they had it for 59.00.With the big eye relief on this scope it generally needs to be mounted pretty far forward, and rings are not a good way to do it as the front ring will end up on the handguard. Check out one piece mounts! Primary Arms sells a cheap one if you are low on cash. I believe it is around 39.00. Hope this helps!Edit: meant to also say not sure any mount will clear a fixed A2 rear sight. « Show Less
902442
The top of the sight (tip of protective ears) is 1.5 inches from the top of rail. The opening for the sight post begins @ 1 and 1/8th inches from the top of rail. If buying the front and rear sight set, they are designed to mount on the same plane/rail height. Hope this helps.
622007
Correct you will need the riser for 1/3 co witness. If you are shooting with both eyes open as you should even without the riser and absolute co witness you really don't see the front sight. My rear sight is fold down so that isn't an issue.
654734
Don't know for sure. I bought both front and rear popup sights to mate with my Flat top upper and the"raised" gas block (to match the pop up rear sight on my new flat top upper). They aligned perfectly! I'm doing to do an upgrade soon to replace my Olympic A2 upper with a Flattop upper and although I've got a rear & front flip up set (I got FS & RS from Amazone for $22/ W free shipping. I think they're greart.) decide to keep my stock fixed mil spec FS. We'll see which option works better. question me in a month or so (Wish I couild jump on the "fun" stuff vs. 'day to day crap' right now, but can't.) I'll find out if the std Fixed FS aligns with the flattop popup RS W/I a few weeks. Remind me! Don't know for sure. I bought both front and rear popup sights to mate with my Flat top upper and the"raised" gas block (to match the pop up rear sight on my new flat top upper). They aligned perfectly! I'm doing to do an upgrade soon to replace my Olympic A2 upper with a Flattop upper and although I've got a rear & front flip up set (I got FS & RS from Amazone for $22/ W free shipping. I think they're greart.) decide to keep my stock fixed mil spec FS. We'll see which option works better. question me in a month or so (Wish I couild jump on the "fun" stuff vs. 'day to... » Read More Don't know for sure. I bought both front and rear popup sights to mate with my Flat top upper and the"raised" gas block (to match the pop up rear sight on my new flat top upper). They aligned perfectly! I'm doing to do an upgrade soon to replace my Olympic A2 upper with a Flattop upper and although I've got a rear & front flip up set (I got FS & RS from Amazone for $22/ W free shipping. I think they're greart.) decide to keep my stock fixed mil spec FS. We'll see which option works better. question me in a month or so (Wish I couild jump on the "fun" stuff vs. 'day to day crap' right now, but can't.) I'll find out if the std Fixed FS aligns with the flattop popup RS W/I a few weeks. Remind me! « Show Less
1156017
@jjnew It is too tall, and that ticked me off too. Instead of returning it I chose to get a 1" riser for my rear sight aperture to accommodate for idiodic sizing. Hope this helps.
2120654
honestly it all deppends on your optics size the larger the retical opening the tall the ring has to be so expect to have too make a couple returns to find out what you need. I would recomend going as low as posible, with the mount your allready going to have to put a build up on your stock to get correct sight picture. Just make sure you get the right ring type, wevers will not work on this rail.