I bought one last month for a full-length M16A4 equivalent for $150 from Primary Arms. If it's your gun and you are required (by unit or department policy) to keep quad-rails then I'd try a BCM QRF. The Daniel Defense Omega free-float drop-in is a good choice if it's an issue gun and you're not allowed to modify the base weapon (i.e., driving out the sight base pins and replacing the barrel nut and delta ring assembly) under threat of military non-judicial punishment. Con going against it is spotty availability during covid craziness. Put a Knight panel on the bottom with ergo ladders on the sides and it feels good, with thermal protection when you get to shooting a bunch of magazines (not the proverbial "Mag dump," but shooting lots of targets). I really, really like the Larue for its "Short" bottom rail and "Skinny" profile. Needs to hold zero with a PEQ after riding in the bed of a truck, having a trip and fall, or just being dropped. Those of you still using quads: which ones, and why? Numbers, such as dimensions and weights would be very useful. I wear a size M exam glove, but helping him research a bit has made me curious, since they don’t look as thicc anymore. If not pic rail, he’ll probably end up with a Mk8. I mostly shoot MLok URX4 guns, but a buddy of mine that wears size L exam gloves is considering a quad rail for a 14.5” P/W. Where are we at on quad rails? My newest design is a DD RIS II, and I’ve noticed that some others are slightly thinner and significantly lighter. My preference is for standard pic rails because of the grip I get with them and I think the mounting of accessories is more solid. My bolt gun currently uses mlok and I had a DD rifle with keymod.
I’ve used keymod and mlok rails and never really had a like or dislike for them. I like the larue rails because of their design with a tucked in bottom rail and the built in QD.
10 inch quad rail dd free#
My go-to free float rails are DD RIS II (FSP or not) and KAC rifle length FF RAS. My favorite is actually the original SMR as the corners are slightly rounded giving it a very round feel when held in hand. I lump these in with actual quad rails due to their shape. Geissele: I use MK4's and MK8's as well as the originals. Larue: heavy and stout, a little difficult to install, the abbreviated bottom gives it a kinda rounded/pear shaped feel which inlike.ĭD Omega: I think these only came in 7" and 9" lengths but they're thinner than they are tall (think I-beam) are lightweight and feel slim in profile. Ironically, it has aged well as a competitor to the current crop of floppy ass skinny handguards because of that. It looks like some lazy engineer went “eff it just shave the cross slots off a pic rail if these sissies want a lighter rail”. In fact, a quad with ladders might even be a hair thinner. The Mk8 with Magpul covers is basically the same thickness as a quad with thin covers. Docsherm has preached the Larue rail quite a bit. Probably not as pear shaped as the Larue, though. The DD RIS also has a not-so-tall bottom, giving it a good feel for its size.