5.56 mm Guns for Sale

Colt 5.56x45mm M4 Complete Lower Receiver

  • $399.99 $399.00
  • Brand: Colt
  • Item Number: SP633784

LMT CQB MARS 5.56mm Lightweight Modular Ambidextrous Rifle System

  • $2,499.00 $1,599.99
  • Brand: LMT
  • Item Number: CQB16-MARS