LMT SPM 5.56 SEMI-AUTO RIFLE SYSTEM • FLATTOP UPPER RECEIVER W/ 16″” CHROME LINED 1:7″” TWIST 5.56 BARREL • STANDARD SEMI-AUTO BOLT CARRIER GROUP • TACTICAL CHARGING HANDLE • DEFENDER LOWER W/ M4 STYLE BUTTSTOCK AND STANDARD TRIGGER GROUP • INCLUDES: HANDGUARDS, OPERATOR’S MANUAL, AND MAGAZINE