Camouflage rifle with scope on a tripod in a natural setting

Camouflage rifle with scope on a rock in a mountainous landscape

Hunter in camouflage gear with a rifle and binoculars, sitting on a rocky outcrop in a mountainous area.

Alpine camo rifle stock on a white background

Youtube video introducing the Flagstaff rifle stock

Grayboe

Flagstaff

One Stock. Multiple Rifles.

Lightweight hunting stock ergonomics combined with Grayboe's Universal Mini Chassis (UMC) system for a rigid, modular rifle platform.

STOCK ONLY

from $139

Complete Flagstaff System

Black + UMC — $299

Camo + UMC — $329

Save when you buy together.

Discount automatically applied at checkout.

ChatGPT Image Sep 9, 2026, 02_58_21 PM.png

build your flagstaff

Choose your color, rifle action, caliber and UMC options below.

Color Finish:

Add to cart

Ships in 72 hrs or less Mon - Fri.
Lifetime Warranty

Secured & trusted checkout with:

flagstaff product page hero image w text.png

Built for the Backcountry

The Flagstaff is molded from impact-resistant polymer, lightweight yet rugged. Trusted in military and industrial applications. It's weather resistant, trail tested and built to perform season after season.

plug and play system

Universal Mini Chassis compatible. Shoot multiple brands of rifles and calibers out of the same stock. Short or long action, Remington or Howa, it doesn't matter. They all fit the stock the same. If we have a Mini Chassis for it, it fits.

features

Universal Mini Chassis Compatible

Bolt in multiple rifles and calibers using the Universal Mini Chassis (UMC) system into the Flagstaff stock.

Takes AICS magazines

Fits all AICS magazines, no bottom metal required. Mags click right into the belly of the stock. Use standard short AICS mags and 3.715" or 3.850" (depending on what model UMC you have) length AICS mags for long actions calibers.

MLOK Attachments

Takes accessories that attach to a MLOK rail, ie picatinny rail, arca rail, etc.

Conventional Style

Traditional ergonomics and feel. Quick target acquisition.

Thumbshelf and Finger Groove

Thumbrest and trigger finger groove on pistol grip, keeping consistent hand placement shot after shot.

specifications

Overall Weight & Length

Flagstaff with UMC installed weighs 2.5lbs. Overall Length is 31.5".

Materials

Stock is made out of impact resistant polymer. (UMC) Universal Mini Chassis is T6 6061 billet aluminum, hard anodized matte black or cerakote.

barrel contours

Universal barrel channel that fits all barrel contours up to and including Proof Research Carbon Sendero.

Forend tip diameter measures .925".

grip angle

35° degree grip angle with texture to provide a positive grip in the elements.

Forend

Length of the forend is 11.25" from face of a short action Rem 700. Finger grooves on right and left hand side for off hand shooting.

Length of PUll

13.5". (adustable spacers coming soon!)

molded in mlok slots w QD cup sling attachment.png

mlok slots molded in on forend

with 2 QD inserts for rifle sling shoulder carry

muzzle rise mitigation recoil pad

(Length of Pull adjustment coming soon!)

molded in mlok slots w QD cup sling attachment (2).png

texture on grip

Forend finger groove for offhand

What you get:

Mag lever options.

Most Universal Mini Chassis models give you the option to choose between a polymer hunting style mag release lever or an adjustable paddle style lever with .080" of vertical adjustment.

*Hunter lever not available on the Tikka, Ruger, Savage and Howa/Weatherby UMC models.

Rifle Installation

How to easily bolt multiple rifles to the Flagstaff stock using the Universal Mini Chassis.

Frequently asked questions

How long does shipping take?

Items ship in 78 hours or less, Mon - Fri.

Will my Universal Mini Chassis be bolted to the stock when I receive it?

We don’t bolt the UMC to the stock so you can see how it works. New action screws are provided that you will use to bolt your rifle to the UMC that are in the bag with the UMC packaging. We recommend 45 in lbs to bolt the UMC to the stock and 45 to 65 in lbs (whichever you prefer) to bolt your rifle to the UMC.

The Ruger American and Mossberg Patriot rifles must be bolted onto the UMC first and the trigger guard pinned into place before bolting to the stock.

Do you ship internationally?

Yes we do, you will need to register with our exporter here, https://easyexport-web.azurefd.net/signup-purchaser before we can ship your order.

How do i purchase a Universal Mini Chassis (UMC) by itself, to use on another rifle I own in the Flagstaff stock?

You can purchase additional UMC's on the Universal Mini Chassis product page and add them to your cart before checkout.

I have a Ruger American .308 and a Remington 700 .7PRC rifle, I can really shoot both rifles in the same stock?

That is correct. You get a UMC for your Ruger American .308 (short action length) and a UMC for your Remington 700 7PRC (long action length) and they both will plug and play in the Flagstaff stock.

Will my rifle hold zero after i sight it in and remove the UMC with the rifle on it out of the stock?

Yes it will. Once you have sighted in your rifle on the UMC in the stock. You can remove your rifle keeping the UMC on it and it will hold zero.

What are the torque specs?

We recommend 45 in lbs bolting the UMC to the stock. Anywhere from 45-65 in lbs bolting your rifle to the UMC.

Do I use my factory action screws to bolt my rifle to the UMC?

No, we will send you a new set of action screws in the box that must be used to bolt your rifle to the UMC.

Do you make UMC's and Flagstaff stocks in left hand?

Unfortunately we do not at this time. We hope to offer left handed UMC compatible stocks in late 2026.