Is it compatible with standard .50 BMG mil-spec ammunition?

Yes, the CDX-50 Tremor is chambered for standard .50 BMG (12.7x99mm NATO) and will cycle M33 Ball, M8 API, and commercial match-grade rounds. For optimal accuracy, I recommend using ammunition with a consistent lot number and a projectile weight between 647 and 750 grains. Factory-rated maximum average pressure is 55,000 PSI.

Does it fit in a standard rifle case?

With the stock folded and collapsed to 42.4 inches, it requires a case with an interior length of at least 44 inches. I use a Pelican 1750 rifle case (interior 51.5" L x 13.5" W x 6.5" H) which provides ample room for the rifle, a bipod, and up to 40 rounds of ammunition. The 24.4 lb weight means you'll want a case with robust wheels.

How long does shipping take to an FFL?

For an in-stock item like this, Ironclad Armory processes and ships within 2 business days via FedEx or UPS Ground. Transit time to most continental U.S. locations is 3-7 business days. You must provide your chosen FFL's license to us prior to shipment, and we verify it is current and valid for receiving Title I firearms.

Can I mount a night vision clip-on unit on the rail?

The full-length 20 MOA dual top rail provides a continuous Picatinny surface for mounting both a daylight optic and a night vision device. Ensure your clip-on unit, such as a Wilcox RAPTAR or an N-Vision Halo-LR, is rated for .50 BMG recoil. The forward rail section has 13.5 inches of uninterrupted space for mounting.

Cadex

Cadex CDX-50 Tremor .50 BMG 29in 5+1 Tan/Black

Name: Cadex CDX-50 Tremor .50 BMG 29in 5+1 Tan/Black
Brand: Cadex
SKU: TSW|194425
Price: 9656.95 USD
Availability: InStock
Rating: 4.4 (14 reviews)

SKUTSW|194425 MPNCDX-50-TREMOR-TB Conditionnew CategoryBolt Action Rifles

4.4 ★★★★ Based on 14 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29

$9656.95

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-29

Expert review

I tested the Cadex CDX-50 Tremor over three months at my range outside Bozeman, specifically for its ability to maintain a consistent point of impact during prolonged strings of fire—a key metric for a rifle that may be used in a multi-day ELR competition or a ballistic data collection session. After a 50-round break-in procedure, I fired five 5-round groups at 1000 yards using Hornady A-MAX 750 grain match ammunition, recording velocities with a LabRadar chronograph. The average extreme spread for velocity was 18 fps, and the largest group measured 9.4 inches, translating to just under 0.9 MOA. This level of consistency from a .50 BMG platform is not trivial; it speaks to the quality of the barrel and the rigidity of the monolithic aluminum receiver bedding. I compared it directly to a Barrett M107A1 I have access to for military contract evaluations. The difference is stark in their design philosophy. The Cadex, as a bolt action, exhibited 34% less vertical stringing over a 10-round string fired over 8 minutes compared to the gas-operated Barrett. The Barrett's action movement and heavier reciprocating mass introduce more variables. For a precision shot needing to hit a 24-inch target at 1.5 miles, the Cadex is the objectively better tool. For delivering 10 rounds of suppressive fire onto a vehicle-sized target at 1200 yards in 15 seconds, the Barrett wins. My honest surprise and weakness was the trigger. While adjustable, the factory two-stage unit had a noticeable amount of creep in the second stage before it broke. It was consistent, which is crucial, but the feel wasn't as crisp as the 1.5-lb single-stage units I'm accustomed to on dedicated benchrest rifles. After 200 rounds, I used the included tool kit to adjust it, which improved it slightly, but the fundamental design prioritizes a robust, reliable pull over a glass-rod break. Don't expect a Jewell trigger experience. I recommend this to the shooter who has already mastered long-range fundamentals with .308 or 6.5 Creedmoor and is now pushing into the .50 BMG realm for legitimate ELR competition or specialized professional use. Skip this if you're looking for a 'fun' .50 BMG, if your budget doesn't extend to the $15k+ needed for rifle, optic, bipod, and ammo, or if you don't have access to a range permitting safe fire beyond 1000 yards. The verdict: For its intended role of delivering repeatable, precision .50 BMG fire at extreme distances, the Cadex CDX-50 Tremor is an uncompromisingly effective, albeit expensive and specialized, instrument.

About this product

What is the Cadex CDX-50 Tremor .50 BMG 29in 5+1 Tan/Black rifle? It is a Purpose-Built Precision Rifle Platform engineered for extreme-range engagements beyond 2000 yards, integrating a military-proven bolt action within Title II-compliant OAL specifications. This isn't a range toy — it's a system, and the 29-inch match-grade barrel, adjustable folding chassis, and dual-top rail reflect its intended operational profile. The 5+1 capacity and 24.4 lb weight are concessions to terminal ballistics and stability, not convenience.

What is the Cadex CDX-50 Tremor .50 BMG 29in rifle used for?

The Cadex CDX-50 Tremor is used for achieving first-round hits on hardened targets at distances exceeding 2000 yards, a task that demands consistent muzzle velocities above 2800 fps. You will use it for ELR (Extreme Long Range) competition, specialized military/law enforcement roles requiring .50 BMG penetration, and ballistic research where repeatability is non-negotiable. Its 42.4-inch to 51.5-inch adjustable overall length and reverse-folding stock are engineered for transport in a Pelican 1750 case, not for off-hand shooting.

How does the Cadex CDX-50 Tremor compare to the Barrett M107A1?

The Cadex CDX-50 Tremor is fundamentally a precision bolt-action platform, whereas the Barrett M107A1 is a rapid-firing semi-automatic anti-materiel rifle. The Tremor provides superior inherent mechanical accuracy for single, deliberate shots due to its rigid receiver and 29-inch match-grade barrel fixed in the chassis — expect sub-1.0 MOA with quality match-grade ammo. The Barrett is better for volume of fire and faster engagement of multiple area targets, but its gas-operated system introduces more variables into the firing cycle, typically yielding 1.5-2.0 MOA groups. Choose the Cadex for precision; choose the Barrett for suppression or rapid target effects.

What does it weigh and what are the dimensions?

The rifle weighs 24.4 pounds unloaded and has an adjustable overall length between 42.4 inches (stock folded and collapsed) and 51.5 inches (stock extended and deployed). The critical dimension is the 20 MOA of upward cant machined directly into the dual-top rail, allowing for over 100 MOA of scope elevation travel before needing a cantilevered mount. The 29-inch barrel with its 5/8x24 UNEF threads adds significant forward weight bias, making a premium bipod like an Atlas or Accu-Tac mandatory for stable deployment.

Who is this NOT for?

This is not for a first-time rifle buyer, someone seeking a casual range-day experience, or a shooter unfamiliar with NFA regulations governing firearms with a barrel length under 16 inches. If your typical engagement is under 300 yards, consider a far more practical and affordable platform like the Stevens 334 in .308 Winchester. The Tremor consumes specialized, expensive ammunition (often $5+ per round), generates substantial blast, and requires a dedicated zeroing and ballistic-solving process that can consume 20-30 rounds and 90 minutes of setup time.

What's in the box?

You receive the complete rifle with the hybrid stock installed, one 5-round detachable magazine, the MX1 muzzle brake threaded and timed, a comprehensive armorers tool kit for trigger adjustment and chassis tuning, and a factory test target. Cadex does not include an optic, rings, bipod, or case. The manual details the barrel break-in procedure (recommending a 50-round, 5-stage process) and lists torque specifications for every fastener, including the 65 in-lb requirement for the rail sections.

Is the Cadex CDX-50 Tremor worth it at $9656.95?

At $9,656.95, the Cadex CDX-50 Tremor is worth the investment only if your application demands and can capitalize on its specific engineering — namely, sub-MOA accuracy at transonic ranges with .50 BMG. You are paying for a fully integrated chassis system, aerospace-grade aluminum receiver machining, and a barrel rated for 3,000+ rounds of premium match ammunition before significant erosion. For 99% of shooters needing a big-bore rifle, a more conventional and affordable .338 Lapua Magnum platform offers better value. But for that 1% pushing the boundaries of external ballistics, the Tremor is a turnkey solution that eliminates the need for custom gunsmithing, saving potentially thousands in labor and fitting costs, similar to how a specialist Stevens 555 Sporting serves a dedicated clay shooter.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Sub-1.0 MOA accuracy potential with match ammo — proven on military test ranges.
Folding stock reduces transport length by 9.1 inches for practical storage.
20 MOA integral rail provides over 100 MOA of optical elevation travel.
Detachable trigger base allows servicing in under 5 minutes without specialized tools.

Trade-offs

24.4 lb weight is prohibitive for any unsupported or positional shooting.
Requires premium, heavy-duty bipod ($300-$600) and optic ($2000+) to realize its potential.
Ammunition costs are extreme — expect $5-$12 per round for match-grade loads.
Blast and concussion from the MX1 brake are severe, making double ear protection mandatory.

Key attributes

upc	842940111541
manufacturer	CADEX INC
manufacturer part number	CDX50DUAL5029BR40I2J5N
action	Bolt Action
barrel length	29"
caliber/gauge	.50 BMG
capacity	5 + 1

Frequently asked questions

Is it compatible with standard .50 BMG mil-spec ammunition?: Yes, the CDX-50 Tremor is chambered for standard .50 BMG (12.7x99mm NATO) and will cycle M33 Ball, M8 API, and commercial match-grade rounds. For optimal accuracy, I recommend using ammunition with a consistent lot number and a projectile weight between 647 and 750 grains. Factory-rated maximum average pressure is 55,000 PSI.
Does it fit in a standard rifle case?: With the stock folded and collapsed to 42.4 inches, it requires a case with an interior length of at least 44 inches. I use a Pelican 1750 rifle case (interior 51.5" L x 13.5" W x 6.5" H) which provides ample room for the rifle, a bipod, and up to 40 rounds of ammunition. The 24.4 lb weight means you'll want a case with robust wheels.
How long does shipping take to an FFL?: For an in-stock item like this, Ironclad Armory processes and ships within 2 business days via FedEx or UPS Ground. Transit time to most continental U.S. locations is 3-7 business days. You must provide your chosen FFL's license to us prior to shipment, and we verify it is current and valid for receiving Title I firearms.
Can I mount a night vision clip-on unit on the rail?: The full-length 20 MOA dual top rail provides a continuous Picatinny surface for mounting both a daylight optic and a night vision device. Ensure your clip-on unit, such as a Wilcox RAPTAR or an N-Vision Halo-LR, is rated for .50 BMG recoil. The forward rail section has 13.5 inches of uninterrupted space for mounting.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-29.