Home / hide-from-search / HK 416A5 Barrel Nut Titanium You cannot add "HK 416A5 Extended Castle Nut" to the cart because the product is out of stock. HK 416A5 Barrel Nut Titanium$27900 SKU: BRLNUTA5TI Category: hide-from-search Tags: 416, 416A5, MR556 Product ID: 4349 Custom made specifically for the HK416A5 ( 416A7/416F ) upper receiver. This barrel nut will not work on standard 416 or MR556 uppers. US made Titanium Fine thread for A5 uppers Silver/Machine Finish US Made Product is out of stock Notify me when this product is back. Please enter a valid email! Subscribe Description Additional information Description Custom made specifically for the HK416A5 ( 416A7/416F ) upper receiver. This barrel nut will not work on standard 416 or MR556 uppers. US made Titanium Fine thread for A5 uppers Silver/Machine Finish US Made Additional information Weight .5 oz Dimensions 3 × 2 × 2 in Manufacturer Black Ops Defense Related products Out of stock HK Style Tan Enlarged Trigger Guard 416A5 G28 M110 RAL8000 $2900 Out of stock HK 416A5 Extended Ambidextrous Bolt Catch Release $8900 Out of stock Sale! HK 416A5/MR223 Factory Tan/RAL8000 Stripped Upper Receiver From: $99900 Original price was: $99900.$89900Current price is: $89900. HK 416A5 Style Quad Rail Foregrip Handguard Black $27900