This is a replacement or spare barrel nut for use with the Sabre Apex Prime.  This is ideal to have for different-length barrels to be used with the Apex Prime for faster barrel swaps. 

FEATURES:
• Made from durable machined aluminum
• Ideal for easier barrel swaps
• designed by Sabre

SPECS:
• Material: Machined aluminum

LINKS:
• Sabre Apex Prime
• Sabre Barrels