Home / Services HK416 MR556 / HK 416 Rear Sight With MP5 Diopter You cannot add "HK 416A5 Extended Castle Nut" to the cart because the product is out of stock. HK 416 Rear Sight With MP5 Diopter$24900 SKU: HK416MP5RS-1 Categories: 416 417 G28 M110, Services HK416 MR556 Tags: 416, 416A5, 416C, 416D, MR556 Product ID: 5951 Brand new, factory original HK 416/416D rear sight base with an attached MP5 rear sight diopter Product is out of stock Estimated Re-stock date: November 8, 2021 Notify me when this product is back. Please enter a valid email! Subscribe Description Additional information Description Brand new, factory original HK 416/416D rear sight base with an attached MP5 rear sight diopter Additional information Weight 3 oz Dimensions 1.75 × 1.25 × 1.5 in Manufacturer HK Related products Out of stock HK 416A5 Ambidextrous Mag Release $3900 Out of stock HK 416A5 Extended Ambidextrous Bolt Catch Release $8900 Out of stock Tan Polymer HK Grip 416A5 G28 M110 RAL8000 $3900 Out of stock HK 416C Style Short Quad Rail Foregrip Handguard Black $17900