Compromised sight picture w/ TLR-1

[Rider]

In my experience, the X300 is pretty much the only light that doesn't block the front sight post at all.

Streamlight and Insight lights DO work at 12'oclock if you're OK with the bottom of the front sight post being blocked. I wouldn't call it a "compromised" sight picture, though it is annoying. Here's the view over an Insight Procyon/WX-150 for reference.



Compare with the "un-compromised" view:


For what it's worth, I have since replaced the Procyon with an X300 and it sits noticeably lower. It's a pretty nice light, too.

These pictures are well done, they show the differences clearly. Nice job.

[uwe1]

Putting the Eotech on a riser will do nothing to change the sight picture you get looking through the iron sights. It just allows you to keep your head more upright when aiming with the Eotech and it will move the window up so your are looking over the TLR1 more. You'll also get a less cluttered view through the window.

The TLR1 is going to block a portion of your front sight post. As Kartoffel said, the x300 is probably the only one out there that won't do this when mounted in the 12:00 position.

[twadsw01]

Right - I was thinking that the whole point of the riser was this: when the irons are lined up with each other and with my eye, I'd still be able to see the TLR just the same as I do now (obscuring part of the front sight post), but when using the Eotech, I'd raise my head/eye a little so that the reticle is centered in the optic's window. The reticle will then clear the light and front sight post completely.

Wrong?

[kmrtnsn]

My work rifle has KAC railed handguards that are the same plane as the upper rail. To mount my Eotech in the position I wanted it in I needed to bridge the gap where the slip ring is located, I like it way forward as I mentioned above, it is not a scope. The LaRue Eotech riser was ideal for this purpose and this illustrates another use for the riser, other than creating a lower 1/3 co-witness.

[twadsw01]

Ah, gotcha.

This is going onto a 7.62 PredatAR, so there's no need for abridging the handguard rail and receiver rail. But, it is still mounted as forward on the upper as it can be without having a portion of the optic's rail attachment point locked onto the upper receiver's rail and the other portion locked onto the handguard rail.

[twadsw01]

Update (so the information's here for posterity)...

The sight picture obtained by placing the Eotech reticle in the upper part of its window by simply adjusting the position of my head is not acceptable, at least not at the level of practice I'm at with it. The reticle is big enough in the window (due to the distance that I have the Eotech placed away from my face) that it requires precise eye/head positioning to ensure that none of the reticle is covering the TLR-1 and that its also not fading out from being too close to the top of the window.

The next step was to check the weaponlight sticky and see what other sort of mounting configurations people have used with a horizontal foregrip. At the moment, I have the VTAC surefire (L4 mini) mounted on the top rail using the VTAC mount, putting the light at about the 10:30 position relative to the bore. I can manipulate the tailswitch using my lefthand thumb if I'm operating the rifle right-handed. However, this arrangement is totally non-ambidextrous, and is also a little awkward. A 12 o'clock mounting position is truly the most comfortable.

Will most likely end up going back to the TLR-1 and using a Larue offset mount on the Eotech, or I might sell the TLR-1 and get an X300. Would probably come within $25 of being the same cost for either option. OR, maybe I should just get an Aimpoint and Larue mount? Hmmm...

[kmrtnsn]

Update (so the information's here for posterity)...

The sight picture obtained by placing the Eotech reticle in the upper part of its window by simply adjusting the position of my head is not acceptable, at least not at the level of practice I'm at with it. The reticle is big enough in the window (due to the distance that I have the Eotech placed away from my face) that it requires precise eye/head positioning to ensure that none of the reticle is covering the TLR-1 and that its also not fading out from being too close to the top of the window.

The next step was to check the weaponlight sticky and see what other sort of mounting configurations people have used with a horizontal foregrip. At the moment, I have the VTAC surefire (L4 mini) mounted on the top rail using the VTAC mount, putting the light at about the 10:30 position relative to the bore. I can manipulate the tailswitch using my lefthand thumb if I'm operating the rifle right-handed. However, this arrangement is totally non-ambidextrous, and is also a little awkward. A 12 o'clock mounting position is truly the most comfortable.

Will most likely end up going back to the TLR-1 and using a Larue offset mount on the Eotech, or I might sell the TLR-1 and get an X300. Would probably come within $25 of being the same cost for either option. OR, maybe I should just get an Aimpoint and Larue mount? Hmmm...

It still sounds to me like you are trying to use the Eotech like a scope, which it is not. You shouldn't have a sight picture per se but rather you should be seeing the reticle superimposed on the target with both eyes open.

[ryr8828]

The only time I have a problem with my ddm4v1 and my tlr1s is if I'm looking directly into the sun.

[nickdrak]

Hmm, thanks alot for the feedback, guys. I think my first line of action (aka, the cheapest option) will be to leave the Eotech on there as mounted and see what simply moving the reticle higher in the window does....

Im not quite sure what you are thinking of doing from your above post. I think it is one of two things which are both a no-go in-terms of properly setting up your Eotech. RTFM!

The Surefire X300 or TLR1 mounted in the 12 o'clock position is designed to be used in-conjunction with an optic/mount combo that places your iron sights in the "Lower Third" of your sight picture when looking thru your optic. Get the LaRue QD riser mount: http://stores.homestead.com/Laruetac...tail.bok?no=33 and drive on.

The Surefire X300 is a lower profile and better light for this application. Hell, It's a better for any application.

[nickdrak]

The only time I have a problem with my ddm4v1 and my tlr1s is if I'm looking directly into the sun.

Do you shoot at the sun much?