The J P Enterprises AR .308 .750 Jam Nut 5/8-24" Steel Black is a purpose-built hex jam nut designed to precisely index muzzle devices on AR .308 platforms. Machined from durable steel and finished in black, it threads onto 5/8-24 barrels to lock brakes and compensators in place without adding unnecessary bulk.

This jam nut’s slim .200" thickness allows fine adjustment of muzzle device orientation while keeping overall length compact. Its hex profile works with a thin wrench, making installation straightforward for builders and armorers who want repeatable alignment and secure clamping. Ideal for range use, training, and general rifle setup, it reflects J P Enterprises’ focus on practical, well-executed components for modern AR builds.

Key Features:

• Manufacturer: J P Enterprises
• Model: AR .308 .750 Jam Nut 5/8-24" Steel Black
• Material: Steel
• Color: Black
• Firearm Fit: AR .308
• Thread Pattern: 5/8-24
• Thickness: 0.200"
• Quantity: 1