The FAB Defense FXGLR16CP GLR-16 CP Tactical Buttstock for AR-15/M16/M4 in Black Polymer combines rugged durability with practical ergonomics, delivering an adjustable cheek-rest and anti-rattle mechanism to enhance repeatable aiming and shooting comfort across a variety of AR platform configurations. Crafted from high-strength polymer with a matte black finish, this buttstock is designed to endure demanding field use while maintaining a lightweight profile that wont bog down your rifle setup. The FXGLR16CP integrates a user-friendly final fit, featuring a secure locking system and built-in swivel studs, ensuring reliable stability when mounting slings or accessories while keeping motion minimal during recoil. Although it does not include a tube, its versatile design accommodates compatible internal dimensions to provide a secure, snug feel that helps shooters maintain proper eye alignment and consistent cheek weld, whether youre dialing in precision at the range or navigating rugged terrain. Ideal for rifle enthusiasts seeking improved cheek height adjustability, recoil control, and a solid, cantilevered stance, this buttstock supports reliable performance and comfort on AR-15 variants and other compatible platforms.