Howdy all - I recently entered into the wide world of AR-15 ownership. I'm looking at options for getting a few (tasteful!) accessories added, not trying to go all Navy Seal or anything, but would really like to get a light mounted somehow. I know the "right" way to do it is to pay for one of the $100-200 quad-rails that replace the front grip, and then pay for a $100-200 light with a rail mount to tack onto it. But, I'm trying to do this on the cheap, while still ending up with quality results. On my shotgun, I currently have mounted a small 90 Lumen Coleman LED "tactical" flashlight in one of the ATI clamps like this: I've been really happy with that setup, puts out plenty of light for bump-in-the-night defense, has held up very well several hundred rounds later, and set me back about a whopping $40. Is there any reason I can't do this same thing on my AR? I've read about the advantages of "free floating" the quad-rails so there is nothing clamped down on your barrel potentially impacting accuracy, but would this light clamp have the same effect, and if so would it impact accuracy enough that I'd even notice? This is primarily serving as a plinking/home defense/shtf weapon, I don't need to be able to hit a squirrel in the big toe at 500 yards or anything, more like minute of pop can at maybe 150 yards. Thanks!