Springfield Armory Saint M-LOK B5 5.56mm NATO 16in Black Semi Automatic Modern Sporting Rifle - 30+1 Rounds - This is the SAINT for the rugged individualist who appreciates the classics. The lightweight mid-length direct gas impingement operating system offers superlative reliability. Top-end B5 Systems furniture combines comfort with ample M-Lok space so you can customize your SAINT to fit your unique personality. The traditional front sight base is both unbreakable and foolproof. A 16in chrome moly vanadium Melonite-coated 1: 8in-twist barrel strikes the perfect balance between compact portability and rugged performance. B5 SYSTEMS BRAVO STOCK : The B5 Systems Bravo Stock features rugged construction and thoughtful design, from its ergonomic cheekweld to its integrated QD sling mounts and no-slip cushioned buttpad. B5 SYSTEMS M-LOK HANDGUARD : Ultra-slim and exceedingly tough, the composite B5 Systems handguard features M-Lok slots and built-in stamped metal heat shields. B5 SYSTEMS TYPE 23 P-GRIP : The composite B5 Systems Type-23 P-Grip delivers enhanced ergonomics through its steep angle, extended tang and palm-filling design.