STERN DEFENSE 9MM UPPER 4" BBL 4" M-LOK RAIL Hollowpoints Muzzle Energy: 235 ft-lbs

Muzzle Energy: 235 ft-lbs

Energy: 1566 ft-lbs

this bipod features carbon fiber legs and a 6061-T6 aluminum core for optimal strength-to-weight ratio

45 ACP 230gr TSJ delivers advanced performance with a unique visual appeal

it features a specially designed follower to ensure smooth operation

STERN DEFENSE 9MM UPPER 4" BBL 4" M-LOK RAIL Hollowpoints Muzzle Energy: 235 ft-lbsThe STERN DEFENSE 9MM Upper with a 4" barrel and 4" M LOK rail offers a compact and versatile solution for your AR 15 platform. This complete upper features a 4" 9mm barrel with a 1: 10 twist rate, optimized for accuracy and reliability. The free float 4" M LOK handguard provides ample space for accessories while maintaining a slim profile. The upper includes a Glock compatible bolt carrier group and an enhanced charging handle for smooth operation.