Kincel and VLTOR engineer Jeff O’Brien began building a handguard and rail system that would eliminate the 3, 6 and 9 o’clock position limitations, be lighter in weight with increased ventilation, not use loose screws and nuts easily lost and was also self-contained. One of these experimenters was Eric Kincel, who was at VLTOR Weapon Systems at the time. Things like polymer lowers, and carbon fiber became accepted and even well-liked. As the AR-15 gained popularity and technology advanced, people started experimenting with different materials to keep weight on their rifles down. Picatinny and Weaver rails require mounts for your mounts and add extra weight to your rifle. Because of the inconsistency on Weaver rails, Weaver mounts will fit on Picatinny rails, but Picatinny mounts will not fit on Weaver rails. Military adopted the Picatinny rail on February 3, 1995. The locking slot width on Picatinny rails is 0.206 inches, the spacing slot measures 0.394 inches and the slot depth is 0.118 inches. Military arms and ammo research, development and acquisition facility-took this new standardized rail for testing and evaluation and created the military standard for the Picatinny rail. Then, Gary Houtsma, an engineer at Picatinny Arsenal-U.S. company started working on standardizing the Weaver rail system. The slots are 0.180 inches wide, but the spacing on Weaver rails are not and have never been consistent. The Weaver mounting system was designed by William Ralph Weaver of Weaver Optics to mount the company’s scopes to rifles and incorporates flat dovetail rails with cross-wise slots. Though not the first, the Weaver mounting system was, and might still be, the most widely used. Both are based on the same principles of using rails and slots to mount optics and other accessories to firearms. Last edited by Koshinn 03-27-14 at 23:16.Until 2012, we only had two ways to mount accessories to our ARs and other Modern Sporting Rifles (MSRs)-Weaver and Picatinny. But at least the Noveske one doesn't require removing your rail, which is only a minor inconvenience anyway. That being said, the IWC version is much cheaper.
But only enough torque to align it after it's hand tight) that it's not going to move when the bipod isn't mounted, and the way the bipod works, it physically can't come out if the bipod is mounted and tightened down.
There's enough torque (using the plastic as a crush washer essentially. Overall it's very stable and isn't going anywhere. you can't see the top of the hat in this picture since the top is inside of a large keymod hole: See how the threaded backing plate has the raised portion towards the barrel? Also notice that the screw part of the stud is basically flush with the backing plate's threaded hole, implying a lot of thread contact. To get it aligned, attach a Harris bipod or insert a punch into the hole and gently turn it until it's aligned. Put the hat shaped plastic piece facing towards the keymod hole (which is upside down from how it normally mounts to a troy rail) and then screw in the bipod stud. Slide the backing plate into place over a large keymod hole, with the raised portion facing towards the barrel, not towards the rail. It comes with the stud, a hat shaped plastic piece, and the backing plate. I can flip the backing plate over to fix that, but then the thread engagement is almost *will* end up pulling out.The Noveske trx bipod is perfect for keymod, I've been running it for like a year or so, it's completely rock solid.
You can kind of half-assed install it in the keymod opening but it doesn't really index into the opening on the back side, so the backing plate ends up all crooked and I just don't trust it. Does the IWC bipod mount actually fit the keymod opening right? I have a Noveske TRX/NSR bipod mount here which is supposed to work with keymod, but there's no way I can see for it to work.