Grayboe Core UMC Compatible Adjustable Rifle Stock – Dune Camo

Description

Grayboe built the Core to be the stiffest stock in their lineup, and it shows the second you pick one up. This version is the forged carbon fiber model in Dune Camo, and it runs on their Universal Mini Chassis setup, meaning your barreled action bolts to a UMC unit that then drops into the stock. The forged carbon is cured under high heat and pressure for a dense, dead-feeling platform with essentially no flex, which is exactly what precision and PRS-style shooters are after when they want the rifle to do the same thing shot after shot.

What the Core UMC Stock Brings to the Line

The forged carbon version weighs in around 6 pounds with the UMC installed, putting it squarely in competition-stock territory where stability matters more than shaving ounces. The geometry borrows heavily from the well-loved A5 shape, then adds modern match features. You get a universal barrel channel that clears contours up to and including 1.250 inch straight barrels, so those fat bull barrels have plenty of room. A full-length M-LOK rail runs under the forend for bipods and ARCA rails, and there are QD sling attachment points front and rear.

Dialing In the Core to Fit You

The cheek piece adjusts both vertically and side to side, letting you lock in a clean, repeatable line of sight down your scope. Length of pull is handled with 1/4 inch spacers down to a 12.75 inch minimum, which is short enough for smaller-framed shooters or anyone who likes to tuck in tight behind the gun. The Core ships with a Techno gel Grayboe recoil pad, and the belly of the stock takes AICS magazines directly with no bottom metal required. Run standard short AICS mags for short actions and 3.850 inch mags for long action calibers.

Why the UMC System Is the Real Trick

The Universal Mini Chassis is the piece that makes this stock so versatile. Once your rifle is sighted in, the UMC holds zero even when you pull it out of the stock, so you can move the same barreled action between different Grayboe stocks or swap rifles into one Core without rezeroing. It handles popular actions including Remington 700 and Howa in short or long action configurations. Grayboe backs the Core with a lifetime warranty, which tells you how they feel about the forged construction.