Strike Industries had a number prototypes on display at their SHOT Show booth. Thier ultra low profile (or “no profile”) backup iron sights are ingenious. They mount on picatinny rails but are so low profile they extend no higher than the rail itself, ensuring they do not interfere with optics or other accessories. They can be used in-line or as angled sights.
Strike are also developing a baseplate for Magpul PMAG magazines. The base plate extends further allowing the magazine to be used as a bipod (note how it sits upright on the corner of the plate) and additionally expending the capacity of the magazine by one or two rounds.
They are also developing a Ruger 10/22 tactical-style takedown stock. A standard Ruger 10/22 can be converted into a takedown rifle using the stock’s propriety barrel locking mechanism. It also features a folding stock adapter, compatible with AR-15 stocks, and a AR-15 pistol grip.