Does the Tasco Red Dot need a riser?

tcrawford · May 8, 2011

I just ordered a Tasco Red Dot and was wondering if it needs a riser or if it can be attached to the top rail? If it needs a riser, what do you recommend? Ideally, I want the red dot to co-witness with my iron sights. I am just looking for something inexpensive that will do the trick.

Thanks!

mewisemajic · May 8, 2011

I have looked at them and if you have fixed iron sights you will most likely need a riser. If you have MBUS or folding BUIS you can probably get away without using a riser but the height over bore will be low, similar to an EOTech.

ChattanoogaPhil · May 8, 2011

tcrawford said:
I just ordered a Tasco Red Dot and was wondering if it needs a riser or if it can be attached to the top rail? If it needs a riser, what do you recommend? Ideally, I want the red dot to co-witness with my iron sights. I am just looking for something inexpensive that will do the trick.

Thanks!

Tasco makes a lot of red dots. If it's one of the typical BKRD series with a built in mount you'll be able to mount it on the rail. The issue will be that it's too low to comfortably see thru it. Suggest using a 3/4in tall riser for lower 1/3 co-witness. That said, it would be easier to offer suggestions if you mentioned what optic you ordered. It's like asking what tires fit on a Ford.

mewisemajic · May 8, 2011

My guess was that he was talking about this one:

It will be low without a riser.

tcrawford · May 8, 2011

mewisemajic said:
My guess was that he was talking about this one:

It will be low without a riser.

Yes, that is the red dot I purchased. I am going to mount it on an M&P 15-22. I tried searching for risers but wasn't able to determine (a) which height to get for co-witness and (b) a relatively inexpensive one since it's just for a 22lr.

ChattanoogaPhil · May 8, 2011

mewisemajic said:
My guess was that he was talking about this one:

That is the BKRD series.

tcrawford said:
I tried searching for risers but wasn't able to determine (a) which height to get for co-witness and (b) a relatively inexpensive one since it's just for a 22lr.

3/4in risers cost about $10

chuck s · May 8, 2011

-- Chuck

CrazyFingers · May 8, 2011

Yes, you'll probably want a riser.

I'm using this one:
Leapers UTG Deluxe Medium Profile Picatinny-Style Riser Mount AR-15 Flattop Matte - MidwayUSA

sbuck56 · May 9, 2011

Crazyfingers, is that a 30mm or a 42mm?

CrazyFingers · May 10, 2011

It's this guy:
Tasco Red Dot Sight 38mm Tube 1x 30mm 5 MOA Dot with Weaver-Style Mount Matte - MidwayUSA

joepa150 · May 12, 2011

I had one. To cowitness you will need a riser.

Juvicator · May 12, 2011

.75 riser works the balls. it isnt a have to have, but it helps keep your neck from breaking. and 3/4 is just right for co whitness

Emoto · May 13, 2011

CrazyFingers said:
Yes, you'll probably want a riser.

I'm using this one:
Leapers UTG Deluxe Medium Profile Picatinny-Style Riser Mount AR-15 Flattop Matte - MidwayUSA

Great info. I had been looking at that very riser. Thanks much. Cool username, BTW. Reminds me of a song I know.

dogg1er · Jun 25, 2011

Hey guys will a 3/4" riser also work with a TG8030p, and TG8030TB RD? these are both truglo's. on one rifle i will have magpul bus with the TB model, the other rifle will have the stock sights from the 15-22 with the P model. will a 3/4 inch riser work to co-witness with both sets of sights, or will i need a different size for each? thx for your help guys.

mrasgt · Jun 25, 2011

I hate to ask a stupid question here...

I should know this....on the pics showing the Tasco, they seem rather far far away fron the posistion the eye would take while aiming.
What happens to eye relief?
I have a 4X lepears armor 2 tone recilce, and the eye relief requires the scope to be almost even with the charging handle handle, way closer than these pics of the tasco.

I've never used a red dot on my 15-22, Am I missing something?

Sorry for the stupid question, I always wanted my optic to co-witnise with my stock irons. I just can't get the eye relief anywhere near correct w/o having the darn this so close/

I like some magnafication, thats why I bought the 4x Leapers. It shoots and zeros great. I can look thru the mount, but I can't mount the irons, rrrrrrrrrrrrrrrrrrr. Help.

Please help.

Mark

Pinstripe · Jun 25, 2011

Unlike a magnified scope a red dot has no real eye relief. In fact the farther forward on the rail the better.

The red dots are a both eyes open sight aquisition and let's you focus on your target while still keeping the red dot in line with the target.

I use a 3/4" riser on the red dot using the stock sights and have an absolute co-witness, so you will need a riser.

ChattanoogaPhil · Jun 25, 2011

Pinstripe is right on. The only thing to add is that you can't co-witness with a magnified optic.

The top pic is my Sig with a 4x scope. Just like your 4x it requires mounting for about 3in of eye relief. No iron sights can be use for co-witness. The front sight would be just a ghosty blur.

The bottom pic is my 15-22 with a 1x red dot (no magnification). Notice how far the red dot is pushed out on the receiver. The riser under the red dot is to lift the red dot up high enough so that it's like a window to see through for the iron sights when they are flipped up for use.

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dogg1er · Jun 25, 2011

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

ChattanoogaPhil · 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?

Yes it does, but the riser is specific for this particular optic. It's not a generic rail riser. It's a Primary Arms MicroDot.

Primary Arms Micro Dot (Gen 3)

dogg1er · Jun 25, 2011

So would it be ideal if i looked for a truglo riser knowing it is for my optic?

Does the Tasco Red Dot need a riser?

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