• 2 DAYS LEFT: This Target Haunts Me Contest

    Tell us about the one that got away, the flier that ruined your group, the zero that drifted, the shot you still see when you close your eyes. Winner will receive a free scope!

    Join contest

Thinnest round handguard for ar15?

No. The Midwest Industries Gen II SS is one of the thinnest I have seen so far, but does have a dedicated 12 o'clock rail, and comes with 3 rail sections. It is also the lightest aluminum tube I have used-very nice unit.

You really have to make sure you have a low profile gas block if installing a carbine or MLGS under a longer tube, that is how narrow it is.
 
For a full slick rail, the Clark is probably going to be the lightest. I looked at them for a lightweight build I was doing for my girlfriend, but couldn't get past the fact you have to glue your forearm on.

Another option you might want to look at is the Seekins MCSR; they're crazy light as well for still being aluminum and having a top rail. That's what I went with and I was stunned how light a 12" rail could really be (8.6oz, 6.3oz for a 9"), and with none of the craziness with glue and strap wrenches. MCSR V2 Mod Quad Rail
 
Last edited:
The AP Industries carbon fiber handguards are probably the lightest on the market right now. Their 7" free-float carbine handguard is 3.8 oz.

I have one of the rifle-length one, and it's 5.4 oz.