ATI Outdoors Advanced Technology AR-15 Castle Nut – Mil-Spec Threading

The ATI Outdoors Advanced Technology AR-15 Castle Nut secures the buffer tube to the lower receiver and locks the end plate in place.

• Part Type: Castle Nut
• Compatible Firearms: AR-15 Pattern Rifles
• Material: Steel
• Threading: Mil-Spec
• Installation: Drop-In (Requires Castle Nut Wrench)
• Features: Staking Notches for End Plate