Nice build, SSGT. Even nicer to see more USAF guys here.
I run the KAC rail myself on one of my two AR15s, the one I use for CQB training courses. It is a nice drop-in rail. Not too heavy. It has been good to me. I saved the free floating 12" rail for my range whore. The longer rails weigh too much. By hour 5 of running and gunning your arms get way too tired with the longer rails. In any case, I absolutely love my M4. More so than my Recon rifle.
I run the KAC rail myself on one of my two AR15s, the one I use for CQB training courses. It is a nice drop-in rail. Not too heavy. It has been good to me. I saved the free floating 12" rail for my range whore. The longer rails weigh too much. By hour 5 of running and gunning your arms get way too tired with the longer rails. In any case, I absolutely love my M4. More so than my Recon rifle.

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