Does the Tasco Red Dot need a riser?

G26ster · Jun 25, 2011

dogg1er said:
Phil does your red dot co-witness with your magpul sights? if so high of a riser do you have on there?

Just out of curiosity, why do you want your red dot to co-witness with your MBUS? Do you plan on using them at the same time? Or, do you mean by "co-witness" just being able to see the front sight post through the glass of the red dot, when it is turned off?

dogg1er · Jun 25, 2011

I think you mean to ask, why do i want my red dot to co- witness with my mbus? i dont want to be using my red dot and the battery dies then im stuck with no sights. later on when i can afford a magnified scope i will set that above my mbus and zero the scope in at 100 yards and the mbus at 25 yards.

But for now i have the extra red dot so i might as well make do with what i got.

G26ster · Jun 25, 2011

dogg1er said:
I think you mean to ask, why do i want my red dot to co- witness with my mbus? i dont want to be using my red dot and the battery dies then im stuck with no sights. later on when i can afford a magnified scope i will set that above my mbus and zero the scope in at 100 yards and the mbus at 25 yards.

But for now i have the extra red dot so i might as well make do with what i got.

OK, so you just want to see the MBUS through the glass of the red dot for now. When I had a Truglo red dot on my 15-22, the MBUS co-witnessed through the glass with NO riser under the red dot. It was an open reticle red dot with the standard Truglo base. here's a pic:

dogg1er · Jun 26, 2011

unfortunately mines is not an open reticle. this is the one i have

http://www.cheaperthandirt.com/60606-34.html

I'm gonna get a 1/2" truglo riser and hopefully with some luck it will co-witness with my mbus.

ill post an update just incase some one else runs into the same problem.

G26ster · Jun 26, 2011

dogg1er said:
unfortunately mines is not an open reticle. this is the one i have

60606 - 30mm TruGlo Tactical Dual Color Dot Sight 3 MOA Red/Green Center Dot Lens Caps and Sunshade Included

I'm gonna get a 1/2" truglo riser and hopefully with some luck it will co-witness with my mbus.

ill post an update just incase some one else runs into the same problem.

I didn't think the fact that it was closed reticle or open reticle had anything to do with it. Only the height of the reticle itself. Looks like your Truglo mount is the same as mine (approx), but hey, if you can't see the front sight, then you can't see it. Good luck with the riser.

mrasgt · Jun 26, 2011

OK Phil,

OK, so the 3/4 riser is available in a one piece mount with easy off lever for a red dot? All one piece? And then I can put my stock sights back on?

Sorry for being so numb, but I order on line and can't visualize
and handle the parts.

If you feel like it, could you link me to the red dot and easy off riser that works?

Thanks again.

Mark

Pinstripe · Jun 26, 2011

mrasgt said:
OK, so the 3/4 riser is available in a one piece mount with easy off lever for a red dot? All one piece? And then I can put my stock sights back on?

Sorry for being so numb, but I order on line and can't visualize
and handle the parts.

If you feel like it, could you link me to the red dot and easy off riser that works?

Thanks again.

Mark

Here's one source for the quick release riser.
ARR-591 - AR-15 Quick Release 3/4 " Riser Mount 5.25" of Rail Space

DLParis · Jul 1, 2011

I had an NCStar 1x30 red dot w/ the Leapers 0.83" riser and found it a bit high to co-witness with my irons. I was just gonna deal with it until the red dot took a dump, so I'm sending them both back and exchanging for another red dot and the 1/2" riser.

I'll post the results between the two risers once I receive the 1/2".

dogg1er · Jul 1, 2011

thx alot i'm still waiting to get a riser for mine. i dont want to buy the wrong one.

ChattanoogaPhil · Jul 1, 2011

1. Your sights are about 1 3/8 inches high (tip of the front sight post/center of rear aperture) from the top of the rail. Grab a measure and check for yourself. (Measurement A)

2. Mount your red dot.

3. Measure from the top of the rail to the center of the glass of your red dot. (Measurement B)

4. A - B = Minimum riser height. Any shorter than minimum and your sights will be too high into the glass of the scope. You can get a taller than minimum height riser as long as your red dot has large enough glass to accommodate. Measure it. I like to have my sights in the lower third of the glass rather than the center line of the glass. Either way will work, but you don't want your sights much above the centerline.

Riser heights are made in 1/2, 3/4 and 1in heights. Once you put a measure to it the concept of risers will become very simple.

dogg1er · Jul 1, 2011

If i can ask y do you like the sights in the lower third of your glass? my idea to do that would be to have my RD zeroed in at 50 yards and the sights zeroed at 25 yards. Is this ideal?

ChattanoogaPhil · Jul 1, 2011

mrasgt said:
OK, so the 3/4 riser is available in a one piece mount with easy off lever for a red dot? All one piece? And then I can put my stock sights back on?

Sorry for being so numb, but I order on line and can't visualize
and handle the parts.

If you feel like it, could you link me to the red dot and easy off riser that works?

Thanks again.

Mark

Below is a 3/4 inch riser I use. It is a polymer riser from Tapco. It matches the rifle finish perfect and cost $10. It has thumb screws for easy on/off mounting, and because it is polymere you can regularly take it on and off without worrying about boogering up the rifle's finish.

Uploaded with ImageShack.us

ChattanoogaPhil · Jul 1, 2011

dogg1er said:
If i can ask y do you like the sights in the lower third of your glass? my idea to do that would be to have my RD zeroed in at 50 yards and the sights zeroed at 25 yards. Is this ideal?

Yes, I prefer lower 1/3.

Sure, you can zero your iron sights and red dot independent of each other. However, 25/50 will be near the same.

dogg1er · Jul 1, 2011

Ok so then why the lower 1/3 of the glass?

i'm sorry if this is a dumb question or if its bothering you that i'm asking this, i'm just trying to figure out the logic behind the lower 1/3 of the glass

ChattanoogaPhil · Jul 1, 2011

The reason I prefer it is because when I use iron sights the top of the red dot tube isn't blocking my downfield view of the target area so much. The MicroDot I use has a really small tube.

My advice is to not sweat this stuff. Grab a 3/4in riser, slap it on and go to the range. There will be lots of stuff you learn that you like and don;t like about your red dot and these type of sights in general. Did you know that you can completely look over the top of the rear sight through the red dot scope and the red dot will still be on target just the same as when you look through the rear sight aperture to the red dot? You'll have fun learning.

dogg1er · Jul 1, 2011

ok.

1 more question, are your sights and red dot zeroed in to the same distance or do you have them zeroed different?

Once again sorry for all the questions. I am new to shooting and all the info i find here and all the people willing to answer all the little questions are just great. I have yet to find someone not willing to help.

ChattanoogaPhil · Jul 1, 2011

Same zero. First I zero my iron sights. Then I look through the rear sight aperture while adjusting the red dot till it is on the front sight post.

ps. We all ask questions... lots of em... feel free.

dogg1er · Jul 1, 2011

ok I got it. thanks alot phil i appreciate it.

DLParis · Jul 2, 2011

dogg1er said:
If i can ask y do you like the sights in the lower third of your glass? my idea to do that would be to have my RD zeroed in at 50 yards and the sights zeroed at 25 yards. Is this ideal?

I'm not sure of the ammo you're running, but I mainly shoot the Winchester SuperX 36gr. HP 555, from Wally's. These rounds have a trajectory of 0.0 @ 25 yards AND 45 yards. That will leave your other sight/s available for a longer range such as 75 or 100 if a co-witness isn't priority. As Phil stated, 25 and 50 are pretty close.

Just a thought.
D.

Juvicator · Jul 2, 2011

I agree with chat, if you have a small tube the irons will block the view down range, and draw your eye. I have a big cheapo tasco so I use the 3/4 also handy in hot indoor range when sweat gets too bad to squint just line up the dot and go.

Does the Tasco Red Dot need a riser?

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