GRAYBOE CORE UMC COMPATIBLE ADJUSTABLE STOCK The strongest carbon fiber rifle stock ever built, by far. Forged from advanced carbon fiber, the Core delivers unmatched strength, rigidity and balance. Perfectly engineered for long range precision and competition, it's the ultimate fusion of durability and accuracy. The Core Stock was created for use in the Grayboe Universal Mini Chassis. SPECS Takes AICS magazines Adjustable cheekpiece Adjustable length of pull Extremely durable and dense material UMC compatible Attachment mechanisms include QD cups, built in MLOK plate and Hard mounted screws for quiver Shop Co Mfg: Grayboe