The Rock River Arms LAR-15 Entry Tactical SOCOM is a SOCOM-barrel-profile variant of the standard Entry Tactical, featuring the heavier SOCOM barrel contour with additional material at the gas block seat for enhanced durability. Uses the same RRA two-stage trigger and chrome-moly barrel material as the standard Entry Tactical. The SOCOM profile barrel provides greater resistance to deformation under sustained rapid fire. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2008, USA Weight: 6.6 oz Overall length: 32" Status: Active Intended use: Tactical, Law Enforcement