Luth-AR Cheek Piece Assembly Black. The Cheek Rest Assembly kit contains everything you need to install the Cheek Rest. The Cheek Rest Assembly is designed to add cheek rest adjustability to the MBA-2 or MBA-4 buttstocks. The assembly can also be used as a replacement cheek rest for the MBA-1 or MBA-3 in case of damage or loss of the original cheek rest assembly. Note: The Cheek Rest Assembly is not designed for use with the MBA-5 buttstock. The MBA-5 is designed with a non-adjustable flared cheek rest and is not intended to provide vertical adjustment. Order an MBA-3 or add a Cheek Rest Assembly to your MBA-4 for full cheek rest adjustability on a Carbine buttstock. Specifications for Luth-AR Cheek Piece Assembly: Manufacturer: Luth-AR Condition: New Package Contents: Luth-AR Cheek Piece Assembly 1) Cheek Plate RL-005 1) Lockplate RL-010 1) Steel Thumb Screw TS-01 1) Thumb Screw Star Lock Washer TSW-01 1) MBA-1/2 Side Plate RL-0011 1) MBA-3/4 Side Plate RL-020 2) Side Plate Button Head Cap Screws 8-323/4 SCW-02 2) Side plate/Stop Nut Nyloc Nut 8-32 Black HN-02 Luth-AR CHP-1: Cheek Piece Assembly Black