The FAB Defense FXGLCORESCP GL-Core S CP CQB Optimized Combat Buttstock with Adjustable Cheek-Rest for AR-15/M4 in black fiberglass reinforced polymer delivers a rugged, lightweight upgrade for enhanced control and shooter comfort, making it an ideal choice for precision, CQB, and dynamic field scenarios. Built from durable polymer with a matte black finish, this buttstock pairs robust construction with ergonomic geometry to reduce felt recoil and improve cheek weld, while the adjustable cheek-rest allows rapid fine-tuning for consistent sight alignment across varying optics and target distances. Designed to fit AR-15 platforms, the GL-Core S CP leverages a compact profile tailored for tight spaces without sacrificing stabilization, enabling rapid transitions and steadier follow-up shots in fast-paced environments. Its polymer composition resists impact and wear, ensuring reliable performance under demanding conditions, while the streamlined form minimizes snag risks during movement. Whether upgrading a primary rifle or outfitting a dedicated CQB setup, this buttstock enhances stability, repeatable zeroing, and overall shooting confidence, making it a practical enhancement for shooters seeking a versatile, field-ready stock solution.