What Marble Arms does

Marble Arms is a U.S. manufacturer of mechanical gun sights for rifles, shotguns, and handguns, operating from a single headquarters and manufacturing facility at 420 Industrial Park Drive, Gladstone, Michigan under the legal name Marble's Gun Sights Inc. The company's product portfolio centers on three integrated sight families — front sights (Uni-Ramp fiber optic), rear sights (Sporting, Folding Leaf, Peep Tang, and Bullseye patterns), and shotgun beads (Expert, Mid-Rib, Tritium, Extra-Lum) — plus accessories such as the Catch .22 ammo dispenser and Step Elevator. Its core technology is precision CNC machining of solid steel, paired with proprietary fiber optic cable installation (UV-protected, permanently flared and polished) and tritium capsule self-illumination for low-light applications; sight components are engineered to micrometer-tolerance click adjustments (for example, the Improved Peep Tang provides 66 clicks of windage equal to .260 inch and 85 clicks of elevation equal to .335 inch).

The company manufactures exclusively in the United States and sells exclusively through authorized distributors rather than direct-to-consumer. Its distribution network spans Midway USA and Brownells domestically, plus niche specialty distributors in the U.S. (Jack First, Buffalo Arms, Homestead Firearms, Blue Ridge Knives) and abroad (Bowmac Gunpar in Canada, Waffen FERKINGHOFF in Germany). Marble Arms also serves as an OEM supplier of factory original equipment sights to most American gun makers, and has held notable institutional customers historically — including the U.S. Army, the British Army, Theodore Roosevelt, and Charles Lindbergh — dating to its founding by Webster Marble in 1887 and its first product, the Universal Rifle Sight, in 1892.

Marble Arms was acquired by Bell and Gossett Inc. in 1957; the current parent structure is not confirmed in the available sources, leaving ownership ambiguity. Pricing is not publicly disclosed, no app or API product surface exists, and no revenue, headcount trend, or funding signals are reported. Customer segments center on precision shooters, traditional hunters, cowboy action shooters, shotgun enthusiasts, and law enforcement, with the OEM channel into American gun makers as a parallel primary business unit.

Name

Marble Arms

Legal name

Marble's Gun Sights Inc.

Website

https://marblearms.com

Company type

Private

Founded year

1887

Operating status

Operating

Headcount range

11–50 employees

Short description

Marble Arms is a U.S. manufacturer of precision CNC-machined steel iron sights for rifles, shotguns, and handguns, including fiber optic and tritium-illuminated models, sold through distributors domestically and in Canada and Germany, with a parallel OEM supply relationship to American gun makers.

Ownership category

akta.pro rank

Headquarters

HQ city

Gladstone

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales

Distribution channels8 records

Marketing channels1 record

Core offering

Marble Arms manufactures precision CNC machined steel gun sights and accessories for rifles, shotguns, handguns, and muzzleloaders. The product line includes fiber optic front sights, traditional and improved peep tang rear sights, sporting and folding leaf rear sights, bullseye barrel-mounted sights, and a range of shotgun beads (Expert, Mid-Rib, Tritium, and Extra-Lum). The company also produces accessories such as the Catch .22 ammo dispenser and step elevators for sight height adjustment, and supplies factory original equipment sights to most American gun makers.

Product overview

Marble Arms is a manufacturer of gun sights and accessories for rifles, shotguns, and handguns based in Gladstone, Michigan. The product portfolio centers on iron sights including front sights (Uni-Ramp, Contour, and Ruger Style), rear sights (Sporting, Folding Leaf, Bullseye, and Peep Tang variants), and shotgun beads (Expert, Mid-Rib, Tritium, Fiber Optic, and Extra-Lum). The company also produces accessories including the Catch .22 ammo dispenser and Step Elevator. The Sight product lines work together as a system where front, rear, and shotgun beads must be properly height-matched for optimal sighting. Marble Arms has manufactured sights since 1892 and continues to supply factory original equipment sights to most American gun makers.

Differentiator

Problem solved

Functional benefit

Brands

• Poly-Choke: Variable choke, vent rib, and shotgun sight products acquired by Marble Arms in 1984 and sold separately until 2003.

Products and services

• Uni-Ramp Front Sights Fiber optic front sights for rifles, shotguns, and muzzleloaders using screw held front sights. CNC machined from solid steel with brilliantly glowing UV-protected fiber optic cables permanently flared and polished for enhanced light transmission. Available in fluorescent orange and green.
• Sporting Rear Sights Classic American-pattern rifle rear sight with double step elevator, reversible U-shaped and V-shaped notch piece, and hand-painted enamel diamond. Available in flat top, semi-buckhorn, or full buckhorn style for traditional sporting rifles.
• Standard Peep Tang Sight Tang-mounted peep sight for precision shooting and hunting with micrometer-precise windage and elevation adjustments (each click equaling four-tenths of an inch movement at 100 yards). Marketed as the fastest sight combination for Cowboy Action Shooters.
• Improved Peep Tang Sight Enhanced peep tang sight with interchangeable uprights for elevation adjustment from short range to over 1000 yards. CNC machined 4140 steel guide stud heat treated for durability. Windage adjustment 66 clicks = .260", elevation 85 clicks = .335" with .004" increments per click.
• Folding Leaf Rear Sights Folding rear sights that flatten on top of a gun barrel to allow use of a Tang Peep sight or scope. Available in windage adjustable or drift adjustable models with height adjustable notch piece featuring both U-shaped and V-shaped centers.
• Bullseye Sight Barrel-mounted, dovetail peep sight with steel double-ring peep design for fast target acquisition and consistent sight alignment. When the rear sight is misaligned, the front sight drifts out of the center ring for instant feedback. Available in adjustable models with six-position step elevator or fixed models.
• Expert Shotgun Beads Precision machined shotgun beads used exclusively by major shotgun manufacturers. Available in ivory, gold, fluorescent orange and green fiber optic cable, with UV protected permanently bonded fiber optic cable technology.
• Mid-Rib Shotgun Beads Self-illuminating shotgun beads compatible with traditional front shotgun beads. Compatible with stake-in ivory tapered shank for press fit or brass threaded style mounting.
• Tritium Expert Shotgun Bead Self-illuminating shotgun bead using tritium capsule technology for visibility in dark conditions. Precision machined from solid steel housing a tritium capsule. Ideal for law enforcement shotguns and home defense weapons.
• Extra-Lum Expert Bead Shotgun bead with 50 percent more light gathering qualities than standard fluorescent beads. UV protected fiber optic cable is permanently bonded to a machined steel base with highly polished ends.
• Catch .22 Ammo Storage Dispenser Ammo storage and speed loader for tubular magazines compatible with .22 LR, .17 HMR, and .22 WMR calibers. Eliminates flimsy cardboard boxes, prevents contamination, and clips to belt or pocket.
• Step Elevator Height adjustment control for rear sights featuring double step design for sturdiness with thumb button for easy adjustment. Available for 1-7/8 inch and 2-3/4 inch rear sights.
• Game Getter Gun Historical folding shoulder stocked double barreled pistol in calibers .22 and .44. Weighs 2 1/4 pounds with upper barrel chambered for .22 short, long and long rifle and under barrel smooth bored .44 for shot or ball.

Quantifiable outcome

• Windage adjustment has 66 clicks = .260" total adjustment
• +4 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Midway USAcoreChannel Partner/ Reseller/ DistributorPrimary U.S. distributor for Marble Arms gun sights and accessories. Located at 5875 W. Van Horn Tavern Rd., Columbia, MO 65203. Phone: 573-445-6363.
• BrownellscoreChannel Partner/ Reseller/ DistributorMajor U.S. distributor with locations in Grinnell, IA and Montezuma, IA. Sells Marble Arms products through their website and retail locations.
• Jack First, Inc.minorChannel Partner/ Reseller/ DistributorRapid City, SD based distributor specializing in gun parts and accessories.
• Buffalo Arms CompanyminorChannel Partner/ Reseller/ DistributorPonderay, ID based distributor for firearms accessories.
• Homestead Firearms PartsminorChannel Partner/ Reseller/ DistributorTucson, AZ based distributor specializing in firearms parts.
• Blue Ridge KnivesminorChannel Partner/ Reseller/ DistributorMarion, VA based knife and firearms accessory distributor.
• Bowmac Gunpar, Inc.minorChannel Partner/ Reseller/ DistributorOntario, Canada based distributor serving the Canadian firearms market.
• Waffen FERKINGHOFF GmbH & Co. KGminorChannel Partner/ Reseller/ DistributorGermany-based international distributor serving the European firearms market. Located at Schwanfelder Str. 8, 97241 Bergtheim OT Opferbaum, Germany.
• FUR-FISH-GAME MagazineminorChannel Partner/ Reseller/ DistributorColumbus, OH based outdoor magazine and distributor for Marble Arms products.

Recent moves8 records

Expansion highlights3 records

Direct peers

• TruGlo: TruGlo is a major manufacturer of fiber optic and tritium-based gun sights and accessories, including shotgun beads and pistol sights. It directly competes with Marble Arms' fiber optic and tritium shotgun bead lines and overlaps on the same hunting and tactical end-users.
• Lyman Products: Lyman Products is a long-established U.S. manufacturer of gun sights (notably tang peep and aperture sights), reloading equipment, and shooter's accessories — closely comparable to Marble Arms as a heritage iron-sight and firearm-accessory manufacturer serving precision shooters and hunters.
• Williams Gun Sight Company: Williams Gun Sight Company manufactures a wide range of iron sights, aperture/target sights, and fiber optic sights for rifles, shotguns, and muzzleloaders — directly competing with Marble Arms across nearly the same product categories and customer segments.
• XS Sight Systems: XS Sight Systems manufactures iron sights for AR-platform rifles, shotguns, and handguns with a focus on tritium night sights and fast-acquisition designs. Comparable to Marble Arms as an iron-sight specialist serving tactical, defensive, and hunting shooters.
• HiViz Shooting Systems: HiViz specializes in fiber optic and tritium-illuminated gun sights, shotgun beads, and pistol sights — directly overlapping Marble Arms' shotgun bead product family and precision-shooter customer base with comparable light-gathering technology.

Broad incumbents

• Trijicon: Trijicon is a leading U.S. manufacturer of tritium-illuminated weapon sights, red dots, and magnified optics for military, law enforcement, and civilian markets. It is comparable to Marble Arms in tritium illumination technology but operates at much larger scale and broader product scope.
• Leupold & Stevens: Leupold manufactures riflescopes, red dots, and iron sights for hunting, tactical, and military markets. Comparable to Marble Arms as a U.S.-based sighting-solutions manufacturer but with a much broader and more modern product portfolio.
• Tasco: Tasco is a mass-market optics brand offering scopes, red dots, and iron sights across sporting goods retail channels. Comparable to Marble Arms in the consumer shooting-sports accessory space but positioned at lower price points and broader distribution.

Emerging players

• Talley Manufacturing: Talley Manufacturing produces scope rings, mounts, bases, and a growing line of iron sights for hunting and precision rifles. Adjacent to Marble Arms' iron-sight business with overlap in precision-shooting customers, though its core competency is mounting hardware.
• Dead Ringer: Dead Ringer manufactures fiber optic shotgun sights, pistol sights, and specialty hunting sights. Comparable to Marble Arms' shotgun bead and fiber optic sight lines as a niche competitor in light-gathering hunting/defensive sights.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marble Arms