Just forward of the magazine holder is a short Picatinny rail to accommodate a weapon-mounted light or, if you’re a weirdo, a short vertical grip (assuming you actually registered your chassis as an SBR).Ī free-rotating QD sling mount is built into the left side of the MP17 conversion for those who wish to run a single-point sling. With two 21-round magazines, this gives you 42 rounds on tap without reaching for that spare on your belt. Simply drop your spent magazine and give a swift tug on the forward spare for a quick swap. Integral to the Flux MP17 conversion is a holder for a spare magazine. Folks with longer arms than our 5-foot-10 author may still find themselves scrunched up a little, though.

There’s also some texturing on the back of the SBR stock to help ensure it stays in place. Unlike the original Flux Brace, the MP17 SBR conversion features a longer length of pull, making it easier to shoulder. If the deployment of the stock is impeded, all you have to do is grab it and physically extend it until it locks in place. And indeed, that particular bit of flashiness is retained with the MP17 conversion. The “wow” factor of the original Glock Flux brace was the fact that it could be automatically deployed with a simple push of a button on the right side of the unit. If you plan on moving one registered chassis between multiple hosts, carving that cutout yourself on other grip assemblies will make for an easy day. The law states that manufacturer information can be engraved on the receiver, frame, or barrel - though the chassis itself is the easy button in this instance. To that end, the Flux MP17 grip itself features a handy cutout on the left side to engrave your manufacturer information directly on the chassis itself. For those following along at home, an e-filed Form 1 takes mere days instead of months, so better safe than sorry. Since a full-size P320 only tips the scales at just over 29 ounces, we decided to simply register it to avoid any potential issues. Attorney’s office may pursue charges for illegal SBR manufacture if the host weapon weighs less than 36 ounces unloaded. First and foremost, we’ve learned from internal memos that the BATFE and the U.S. The Flux MP17 has both pistol “brace” and short-barreled rifle options, but we opted for the SBR version for a couple of reasons. The time spent in development really shows. Fast-forward almost a year, and we now have a second-generation made exclusively for the Sig Sauer P320/M17. At the 2019 SHOT Show, Flux Defense made quite a splash with their automatic-deploying Glock pistol brace.

This is the concept of the Flux MP17 conversion. But something slightly larger than a pistol that gives increased range and accuracy we absolutely welcome. But really, what’s the point of a rifle-sized weapon that doesn’t have the inherent capabilities of a rifle? Yeah, we think so too. Pistol-caliber carbines have experienced a huge resurgence over the last couple of years.

Flux brace holster