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How's about a rail mounted front sight post that is also a ring mount for standard diameter flashlight? Think scope ring (proper diameter for a flashlight) with the top part of a FSP on top of it (at the proper height).
Bottom: Rail mount + bottom half of flashlight ring mount.
Top: Top of flashlight ring mount + the rest of the front sight post.
...so basically your flashlight is mounted through the middle of your FSP.
This is a 16" barrel with a 12" rail. I get pretty far out on it. X300 @ 12 o'clock. Not sure if I would want the BU front sight mounted to the light. sight mounted to light, mounted to rail. Seems like quite a few places for alignment to go bad at just the wrong time, which is why I generally like the standard FSP on a hard use rifle, for its durability. Wouldn't be against giving one a T&E.
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Here's a quick MS Paint sketch of the sorta thing I was thinking (ignore lack of symmetry, scale, etc)...
That green/yellow thing in the middle represents the light.
Surf, you may be right about the durability / coming out of alignment concerns -- on the other hand, we trust ring mounts like that to keep scopes and stuff aligned, so I dunno.
I think it might work on the lights that don't have adjustable bezels. Streamlight's SSL-1 would be a good candidate since it looks like the whole front end/bezel assembly is screwed on. A cnc machined bezel with the FSP wouldn't be as big of a stretch for them to convert to. Send e'm a letter or call a rep and ask about it.
I have a DDM4 with a Streamlight TLR1 mounted at 12 oclock in front of the FSB. It does not block the front sight. It does slightly change the sight picture because you don't see as much of the base of the FSB, but you get a full view of the important thing, the sight post. I sighted the rifle in with the light mounted and am able to get good groupings at 50 yards despite the fact that I suck at irons.
What would be really solid is a lower profile X300 type light.
For me the profile doesnt matter. Just the added rail space that placing both the front sight and light on 12 o'clock rail takes up. I guess untill some manufacturer does something I may just try and mount my light in either the 10:30 or 1:30 position(when I get the rail that is).
As a side note I dont think you would need to have a zero issue with front sight for this. If it did happen that instead of a X300/front post combo it was simply a light-mount/front sight combo like mattj posted you could always have the light mount have a solid hole (as in no tightening screws or anything just rail lock, big hole and post on top) with the mounting tension devise seperate. Try to visualize a mount long enough to have 2 rings. One is just the sight with the tightening ring behind it so the sight doenst have a worry of loostening. One could also use a collet type tightening devise.
Just food for thought.
Is this what you are talking about.
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The Larue goose neck rail with an x300 and a dd front sight might give you what you want, you should have almost 10" of top rail behind the front sight.
Last edited by texag; 12-13-09 at 20:31.
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