KFI USA Impala Plus 12 Gauge 3" Chamber 28" Barrel 4 Round Semi-Auto Shotgun - Nero Wood Black BOLT: Unlike most shotguns, Impala Plus uses a patented 6 lug design which offers more locking surface and assurance. SIGHTS: The Impala Plus uses removable, snap on sights from TruGlo offering unmatched visibility in all shooting conditions. Specifications and Features: Gauge: 12 Action: Semi Auto Model: Impala