Promethium TL-1

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  • Regular price $ 4,995.00

Contact us at 813-473-8110 or to order.


Reduced weight without compromise

With the Promethium TL-1 our goal was to create a lightweight, portable rifle without sacrificing accuracy or performance. To achieve this, we started by making a few changes to the largest and heaviest components in a rifle: the chassis, action, and barrel. For the chassis, we selected the XLR Carbon because of its excellent balance of ergonomics, durability, and weight reduction. We then incorporated an extremely tough titanium action body and paired it with a fluted steel bolt to create the ultimate rifle action. Finally, we designed a special 18-22 inch* custom profile barrel specifically for the rifle to achieve an optimum balance between accuracy and weight savings. What we ended up with is a 9.65lb* rifle that’s durable enough to perform in the harshest conditions, and still carries our standard ½ MOA or better accuracy guarantee with appropriate ammunition.

Superior portability and ergonomics

With an overall length of only 36.5-39.5 inches, and weighing in at just 9.65 lbs, the Promethium provides a level of mobility that’s more reminiscent of an assault rifle than the precision rifle that it is. As a result, many nonconventional shooting positions that would be difficult with most other rifles are far more achievable with the Promethium. To push the Promethium’s strengths in unorthodox shooting positions even farther, it comes standard with a long, 15.5 inch carbon fiber free-float handguard that provides greater flexibility for stabilizing the rifle while shooting. This handguard also incorporates the M-LokTM mounting system providing a practically unlimited number of accessory mounting options. Flexible ergonomics are also critical to ensure the rifle can be comfortably used in any position, by any shooter; so we equipped the Promethium with a fully adjustable stock, an oversized bolt knob, and a formed, hand-filling pistol grip. The Promethium’s stock also folds, allowing the overall length to be reduced to a mere 28.8" inches for easier transportation.

Comprehensive performance

We didn’t just stop at making an uncompromising lightweight rifle; we kept working to make the Promethium the best rifle possible. For the action, this meant hand fitting, and coating the bolt in DLC (diamond-like carbon), a coating with an extremely low friction coefficient and diamond-like hardness that ensures smooth bolt cycling, easier cleaning, and reduced wear. The action also has a faster lock time to help reduce the impact of any movement introduced into the rifle during a shot. A great rifle is nothing without a good trigger, so we equip the Promethium with either a 3lb single stage, or 2.5lb two stage trigger from Timney. This highly-regarded manufacturer has been making some of the best triggers around since 1946. For recoil management, the Promethium is equipped with a Griffin Armament Paladin break. This two chamber break is compatible with Griffin’s line of excellent suppressors, and features their special taper mount system which helps ensure accurate suppressor alignment.  To top it all off, each Promethium gets one-of-a-kind Cerakote paint job in the color and pattern of your choice.

Purchase Information:

Standard lead time: 4 months

Payment terms: 50% down, 50% at shipment (Shipment can be delayed to 4-month mark by customer if rifle is ready early)


Calibers: .308 Winchester / .260 Remington / 6.5 Creedmoor

Triggers: 3.5lb single stage / 2.5lb two stage (+$40.00)

Muzzle devices: Griffin Armament Paladin Taper Mount Break / Thunder Beast CB Break (+$40.00)

Non-standard calibers are available for an additional $200 (may add 1-2 months to lead time)

Left-handed version available (adds $500.00 and 2-3 months to lead time)

IMPORTANT! This product must be shipped to an FFL (Federal Firearms License) holder. When ordering please include the shipping address of the FFL holder where you intend to pick up your rifle. The address must match the address listed on their actual FFL. After ordering, your order will be placed on hold until a copy of aforementioned FFL is emailed to us for verification purposes.

Complete feature list:

Titanium short action with DLC coated bolt

Provides a smooth, and easily cleaned action.

A faster lock time (2.3 milliseconds 11.5% faster than standard 700 style actions) and lighter strike (4.3 in/lbs) produces less disruption to the rifle when firing.

18” 5C Rifled Barrel

Barrels are crafted Broughton blanks made from 416R Stainless Steel. They are pull button rifled and stress relieved five times throughout the production process. Then each barrel is hand lapped with a uniform land and groove diameter up to 0.0001" from breech to muzzle.

5C rifling (Canted Lands) provides higher muzzle velocities, increased bore hardness, and extended barrel life. Rifling twist rate varies with cartridge and caliber selection.

Timney Trigger

Available in either 3lb single stage, or 2.5lb two stage configurations.

Every Timney trigger is made from a solid block of heat treated steel, so there's no connector bar to come loose.

Additionally, each trigger comes with a trigger blocking safety, meaning there's no way to move the trigger when it's on safe.

XLR Carbon Chassis

Lightened 6061 T6 aluminum chassis.

Large trigger guard for easier gloved use.

Large Bolt Knob

Eases use of the action with gloves.

Premium Muzzle Break

The Griffin Armament two chamber, QPQ Nitride coated, Paladin muzzle break comes standard, and is compatible with all Griffin Armament taper mount suppressors.

Also available is the two chamber, Thunder Beast CB Break, which is Ion Bond coated, and compatible with all Thunder Beast quick detach suppressors.

Fully Adjustable Folding Stock

Adjustable for length of pull, cheek rest height, and recoil pad height.

Quick-detach flush cup mounts.

Set up for ambidextrous use.

15.5” Carbon Fiber Handguard

M-Lok attachment point

Takes Standard AI Magazines

The magazine catch/release is ambidextrous for easy use from either side of the rifle.

Custom Cerakote Finish

Customer choice of standard patterns included. Premium patterns available (contact us for pricing).

Critical Dimensions

Weight: 9.65lbs

Length: (Minimum Length of pull) 36.5" (Maximum Length of Pull) 39.5" (Stock Folded) 28.8"

Included Equipment

Rifle (No optic)

Polymer carry case

One AICS Short Action P-Mag

Arisaka Defense picatinny rail adapter (five slot)

Arisaka Defense quick detach sling mount

*Weight and overall length are determined with an 18" barrel. (Our recommended barrel length varies based on caliber and application.)