Tyler Grey spent thirteen years getting told no. No, this won't work. No, sights don't work that way. No, nobody will want them. The fact that Saberdyne Systems launched the NDEX Indexing Sight System just now suggests he stopped asking permission. NDEX is a rear-sight-only system that removes the traditional front sight post entirely, forcing a philosophical reckoning with how pistol shooters have been trained for the better part of seventy years. The mechanism is simple, the implication is not. If front-sight focus is doctrine for precision shooting, what happens when you design sights for stress response instead of range conditions? Grey's argument has teeth. Under genuine threat, fine motor control degrades first. The human stress response prioritizes threat acquisition over procedural alignment, which is why tunnel vision exists and why people miss under pressure despite years of repetition. A rear-only sight eliminates the alignment step entirely, keeping visual bandwidth locked on the threat from presentation through decision. That's not theory; it's documented across SWAT shoothouse runs, force-on-force events, and competitive tactical courses where controlled conditions don't apply. The NDEX comes in three configurations. The Small Height at $139 is Glock-exclusive initially (all full-size and compact Glock models except the slim-frame 42/43 variants), direct-to-slide mount, black nitride finish on hardened steel. The Tall Height and Extra Tall Height variants both run $149 and are red-dot compatible, handling suppressor co-witness or co-witness with optics depending on your bore axis and mounting stack. All three are USA-machined and patented (US 9,915,501). The launch positioning is aggressively anti-orthodoxy. The apparel line includes "Not for the Flat Range Minded," "Join the Rebellion," and "Anti Front Sight Sight Club," which tells you Grey isn't chasing approval from established instructors. He's chasing shooters who've felt the gap between range performance and pressure performance and are willing to try something genuinely different. As an instructor myself, he’s got my curiosity.The real question isn't whether NDEX works mechanically, hardened steel and CNC precision handle that. It's whether thirteen years of development actually translated to something instructionally sound or if this is a contrarian swing that feels good in video work but breaks down under scrutiny. That's a question individual shooters will have to answer on their own time, with their own platforms, and in conditions that matter to them. What do you think about the idea? VARIATIONS BY HEIGHT: ConfigurationHeight ClassRed Dot CompatibleBest Suited ForMSRPSmallLow-profileNoStandard carry, Glock standard/compact$139TallSuppressor/opticYesRaised bore axis, red dot co-witness$149Extra TallSuppressor/opticYesMaximum co-witness height, optic stacking$149 For more information, visit https://saberdynesystems.com/ndex-sights/Does a rear-sight-only design align with your shooting philosophy, or does eliminating the front post feel like unnecessary rejection of proven technique?