Grayboe Core: The Most Versatile Chassis — Compatible with Bergara, Rem 700, Ruger American, Howa 1500 & More

If you want a chassis that removes barriers between your action and peak performance, meet the Grayboe Core. Designed from the ground up as a precision-first platform, Core accepts a wide range of popular bolt-action rifle actions as true drop-in installs — meaning no inletting, no adapter plates, and no gunsmith modifications. Whether you’re building a hunting rifle, a long-range trainer, or a competition rig, Core gets you on target faster and with less hassle. 

DIRECT BOLT-IN COMPATIBILITY — EVERY TIME 

The Grayboe Core is engineered to accept the following actions as direct drop-in fits: Bergara,  Remington 700 (Rem-pattern actions),  Ruger American,  Howa 1500,  Weatherby Vanguard,  Weatherby 307,  Mossberg Patriot,  Springfield Waypoint,  Aero (Solus / Aero Precision) Christensen and other Rem-pattern and common bolt-action platforms No modification. No adapters. Just install your barreled action into the Core, torque to spec, and you’re ready to shoot or finish. 

WHY BUILDERS AND SHOOTERS CHOOSE CORE 

1. TRUE DROP-IN SIMPLICITY 

Time is money. The Core’s action bed and screw pattern are machined to exacting tolerances so your action seats cleanly and repeatably. No waiting on a gunsmith and no surprises during test fit. 

2. REPEATABLE ACCURACY THROUGH ENGINEERED BEDDING 

Core provides a rigid, stable bedding interface that reduces movement between shots. That means tighter groups and a more predictable platform for load development and optics zeroing. 

3. OPTIMIZED ERGONOMICS FOR REAL SHOOTING 

Core balances modern adjustable ergonomics — length of pull, cheek height, and pistol-grip geometry — with a rigid action interface. Shooters of all sizes and positions can quickly dial in a comfortable, consistent shooting setup. 

4. DURABLE CONSTRUCTION Every gram matters in the field. Core uses smart material choices and structural design to keep weight down without sacrificing stiffness or durability. 

5. ACCESSORY-READY PLATFORM 

M-LOK slots, QD mounts, and integrated mounting points give you flexibility for bipods, ARCA rails, and soft-case mounting. Core is designed to integrate with the accessories you already use. 

6. SERVICEABILITY & FIELD READINESS 

Because Core is a drop-in chassis, routine maintenance, recoil lug swaps, and barrel changes are straightforward — no complex inlet work to undo.