Very pleased with this product, looks awesome on the gun and mlock accessories fit with ease. And the Rail is super lightweight definitely would purchase again.

Let me first preface this with my application which may be different from the design's original intent: Fighting gun vs. a competition gun or an ultra lightweight home defense build. I use my fire arms in frequent training classes and they get put through the wringer. I also run IR, so rigidity is important. I get that ultra lightweight means giving up in some areas. These are going to flex more than say a Geissele SMR, but the SMR weighs 15oz for a 13.5" where this weighs 5.8 oz for a 15". For my application, this is used to off-set the added weight of a Daniels Defense S2W 6.8 SPC II 16" Cold Hammer Forged Chrome Lined barrel that is 2.3 lbs. The combination of this ultra lightweight handguard and the DD S2W barrel is the same weight as a standard Gov Profile barrel using a heavier 6061 design like the Geissel SMR...but I'm getting a bull barreled upper that is an absolute nail driver! That being said, I did find a very small shift in zero with my IR unit, and a tad bit of a wandering zero as well. The shift can be attributed to flexing of the handguard when heavily loaded, not a deal braker as there are work arounds. The wandering zero however is a no go issue and required some modification to resolve. Most clamp style handguards tend to flex at the top, especially when the barrel gets hot (BCM has a good illustration of this). So in order to remedy that I drilled and form tapped several 10-32 screws radially around the handguard to lock it down as well as leaving in the original clamp and key mounting mechanism. This provides the most secure and stable mounting mechanism available. But does require indexing of the barrel nut using brownells barrel nut shims (which are only $5). It would be nice if JL Billet offered a slightly beefed up version for more hard use applications. A 1/2oz of added weight wouldn't be much of an issue. It's a great product, but could be better. It can serve some specific roles like allowing the use of heavy barrels for a RECCE type rifle without making the rifle heavier than a typical upper like the Geissele URGI that was recently selected by SF. Best of both worlds!