HK 416A5 Extended Castle Nut$2400 SKU: CSTLNUTA5 Categories: 416 417 G28 M110, Services HK416 MR556 Tags: 416, 416A5, MR556 Product ID: 4355 HK 416A5/A7/F extended castle nut, steel These are perfect for the 416, 416A5, 416A7 and any other compatible platform. Steel Black Excellent fit and finish, just like factory In stock HK 416A5 Extended Castle Nut quantity Add to cart Description Additional information Description HK 416A5/A7/F extended castle nut, steel These are perfect for the 416, 416A5, 416A7 and any other compatible platform. Steel Black Excellent fit and finish, just like factory Additional information Weight 5 oz Dimensions 2 × 1 × 1 in Related products Out of stock WAITLIST NOW HK Style Tan Enlarged Trigger Guard 416A5 G28 M110 RAL8000 $2900 Out of stock SALEWAITLIST NOW HK 416 Factory Full Auto Complete Bolt Group New $1,69900 Original price was: $1,69900.$1,49900Current price is: $1,49900. Out of stock WAITLIST NOW Tan Polymer HK Vertical Grip 416A5 G28 MLI RAL8000 $4900 Out of stock WAITLIST NOW Tan Rail Mounted Sling Loop HK G28 M110 RAL8000 $5900