The FN 509ÃÂ is built on the proven architecture of the FNSÃÂ Compact FN made changes internally and externally to meet the rigorous performance standards of the MHS requirements and further developed the platform into the FN 509 with the help from industry experts. Over the course of development the platform has been tested extensively for reliability ammunition compatibility and durability ÃÂ totaling more than one million rounds. - Caliber: 9mm - Operation: Double-action - Mag Capacity: 17 Rd. - Weight: 26.9 oz. - Barrel Length: 4.0 - Overall Length: 7.4 - Twist Rate: 1:10 RH - Length: 7.4 - Height: 5.56 - Width: 1.35 - Trigger Pull: 5.5 - 7.5 lb. - Sight Radius: 5.79 - GENERAL SPECIFICATIONS - Striker-fired autoloader - Double-action operation - Offered as a non-manual safety model - Fixed 3-dot night sight (LE ONLY) - SLIDE - Easily racked combat-style sights - External extractor; loaded chamber indicator - Improved front and rear cocking serrations - BARREL - Cold hammer-forged stainless steel - Recessed target crown - Polished chamber and feed ramp - FRAME - Enhanced grip texture which enables faster follow-up shots in all conditions - Interchangeable backstraps - MIL-STD-1913 accessory mounting rail - OPERATING CONTROLS - Fully ambidextrous slide stop lever and magazine release - MAGAZINE - High visibility low-friction follower; polymer base with black finish - SHIPS WITH - Two interchangeable backstraps - Three 17-round magazines - OwnerÃÂs manual - Locking device - FN logo soft pistol case
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