Required Tools: The castle nut was meant to be installed using an adjustable or fixed spanner wrench. A traditional Ar multitool or wrench can work but may cause damage to the castle nut.
Recommended tool for installation:
https://www.amazon.com/OTC-4791-Spanner-Wrench/dp/B00BVL7ZBY

Note: Due to dimensional tolerances between some manufacturer’s receiver extension collar lengths and differing amount of true threads on various buffer tubes, some may experience difficulties installing.  Please contact info@strikeindustries.com for a replacement castle nut if you cannot install.

Package includes:
-1x Enhanced Castle Nut
-1x Enhanced End Plate
-1x Warning card

Features
– Aesthetic upgrade
– Centrally placed QD for right or left hand sling use
– Easy drop in installation
– Simplified installation of takedown pin and detent via set screw.

-Compared to a standard castle nut and end plate, the fully collapsed position, with most stocks, is eliminated in order to create proper clearance for the QD socket.

Note: First position will be lost

Torque: Do not exceed 35 ft/lbs (47.45 nM) for the castle nut

WARNING:
-Before every use, always check proper function of your QD mount and any wear and tear from use
-Always have your weapon in the SAFE position when not being fired
-Always follow all firearms safety rules and never point your weapon at anything you are not willing to destroy

-CALIFORNIA PROPOSITION 65 WARNING:-
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov