Sig Sauer MCX Rattler Upper 5.5" Conversion Kit, 300 BLK, Tapered Lug, MLOK, Black

Convert any MIL-SPEC AR Lower into an MCX Rattler. Complete with upper assembly, lower receiver stock adapter kit, side folding AR buffer tube knuckler, and match duo trigger kit.

Includes:

• MCX Upper Assembly
  • Charging Handle
  • Bolt Carrier Group
• X-Fold Stock Adapter (ADAPTER-X-FOLD)
• MCX Stock Adapter Kit (2401191-R)
• AR Two-Stage Matchlite DUO Trigger Kit (KIT-TRIGGER-AR-DUO)
• 90 Degree Muzzle Adapter for Standard Non Sig Sauer Suppressors
• Owner's Manual