Sig Sauer MCX .300 Blackout Barrel Assembly - California Legal
For the ultimate in versatility, SIG SAUER is pleased to release SIG MCX conversion kits. With a single Torx bit, an MCX owner can change caliber and barrel length in less than a minute. This 16", 300 BLK kit includes a complete barrel assembly, installation instructions and a .300 BLK warning card.
- Sig Sauer
- 300 Blackout
- Caliber X-Change Kit
- Sig MCX