The Ruger SR9 is a full size striker-fired semi-automatic with a slide activated cocking mechanism, and an integral trigger safety. Using a conventional cam block recoil operated tilt lock and Ruger's full length recoil spring guide rod, the sidearm will prove itself reliably lethal in any self defense scenario.
The SR9 is without a doubt Ruger's polymer grip frame classic. Though it retains the same basic hand pleasing contour of Ruger's popular P345 hammer-fired pistol, its ergonomic design adorns it with the slimmest and flattest grip profile in its class. This is in spite of the fact the SR9's steel magazine holds a hefty 17 rounds.
Furthermore, the SR9 is the first large caliber striker-fired pistol delivered by Sturm Ruger. To the applause of Ruger fans the striker-fired SR9 features a pre set trigger similar to Glock's "safe action". With this mechanism, the striker is partially cocked when the slide is cycled. The trigger completes the cocking cycle and simultaneously releases the firing pin. This makes the trigger pull moderately long and heavy. This adds another safe carry feature, an ideal for law enforcement and self-defense applications.
Internally, the gun features an innovative modular construction of components. The slide hosts separate self contained fire control module, a trigger module, and cam block inserted into the polymer frame. The result is an extremely streamlined and easy disassembly/reassembly process for user maintenance.
Thanks to the modular construction, a favorite feature of the SR9 for fans and shooters alike is its user deactivated magazine disconnect safety. As is the case with majority of semi-automatic pistols, the SR9 comes factory fitted with a magazine disconnect safety, meaning the pistol won't fire if the well is empty of a magazine. However, and unlike any other pistol in its niche, the SR9's disconnect can be deactivated simply by plucking out the disconnect link while the gun is disassembled! Now you can fire the last round even if the magazine is out of the well, or in case the magazine has been damaged.
Mechanically, the SR9 is recoil operated with a locked breech.
Ergonomically, the pistol has a very low slide profile and hence the barrel axis is close to the shooter's hand. This reduces the muzzle rise and hence increasing the aim recovery time during rapid shooting. The slide is available in either brushed or blackened through hardened stainless steel, centered on a fiberglass-reinforced nylon polymer frame. The bevel-edged slide of the SR9 holds snag free open iron sights. The three-dot system introduces an enhanced contrast variety, and offers drift adjustment on both front and rear blades for windage, as well as rear-sight adjustment for elevation.
Additionally, The SR9 also has a reversible backstrap, either a flat or arched grip housing to suite your hand. Finally, the front sports a full fledged Picatinny rail for the mounting of laser sights and rapid deployment of tactical equipment.
The SR9 boasts multiple safety devices such as an ambidextrous manual thumb safety and magazine release. The slide offers an integrated loaded chamber indicator as well as a visual and tactile cocked striker indicator. Internally, a firing pin block safety prevents the pistol from firing if it is accidentally dropped. Furthermore, the SR9 also features a magazine-disconnector. The pistol can now safely be dry fired with an empty magazine in the pistol.