FN Ballista Caliber Conversion Kit, 308 Win 24" 1:11" Twist Polygonal. Replace your worn accessory or keep as a backup. FN America factory accessories are made with the same quality materials that you have come to expect and trust from FN America.

Includes:

• 24" Fluted Barrel with 1:11" twist rate
• Flat Dark Earth Color
• Unique Alpine muzzle brake
• The .308 Win. bolt head converts to bolt body to the new caliber
• A single 8-round magazine in Flat Dark Earth is also included