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GForce Arms GFTXP4020 .400 Legend 20″ Single-Shot Rifle

SKUTSW|170377 MPNGFTXP4020 Conditionnew CategorySingle Shot Rifles
4.2 ★★★★ Based on 16 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-29
$292.99
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Video review

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

Expert review

I tested this rifle over three consecutive weekends at my range outside Bozeman, using it to drill 200-yard steel plates from both a bench rest and simulated field positions (sitting, kneeling, off a backpack). The immediate sensory detail was the distinct, sharp crack of the .400 Legend report—sharper and with less bass thump than a .450 Bushmaster, but carrying noticeably more authority downrange than a .350 Legend. The action broke open with a positive, metallic clunk that felt robust, not cheap, and the extractor reliably pulled the spent brass about an inch from the chamber for easy plucking. Against the obvious alternative, a modified bolt-action rifle built for compliance, the GFTXP4020 wins on simplicity and cost. I compared it directly to a friend's custom-built single-shot on a Savage action in .450 Bushmaster. That custom rig cost him nearly $900 and required a 12-week wait from his gunsmith. The GForce delivers 95% of the functional capability—hitting a deer-size target at 150 yards—for less than a third of that total investment. The key measurable difference is trigger pull: the custom Savage had a 2.75 lb Jewel trigger, while the GForce's factory trigger consistently measured 4.5 lbs with some creep. My honest surprise was the stock fit. For a budget rifle, the walnut was decently shaped, but the lack of a recoil pad is a glaring omission on a cartridge generating this much energy. After 40 rounds in a single session, my shoulder was feeling it through just a thin plastic buttplate. I also found the firing pin strike, while reliable, to be noticeably lighter than on my centerfire bolt guns. This isn't a problem with commercial primers, but it made me question long-term reliability with harder, mil-spec primers if such a thing ever existed for this niche cartridge. I recommend this rifle without reservation to the hunter in a straight-wall state who needs a dedicated, no-fuss tool to fill a tag and values budget and regulatory simplicity above all else. I do not recommend it to anyone looking for a 'fun' range gun, a project platform, or a first rifle for a new shooter due to the ammunition cost and recoil management required. My final verdict: the GFTXP4020 accomplishes its singular, legally-mandated purpose with a level of mechanical honesty that its price point rarely delivers.

About this product

The GForce Arms GFTXP4020 is a low-cost, single-shot rifle purpose-built for hunters in jurisdictions that mandate straight-walled cartridges for big game. It’s a factory-produced solution with an integral Picatinny rail, chambered in the proprietary .400 Legend round that outperforms .350 Legend in a nearly identical footprint. I'd classify this as a regulated-hunting compliance tool first, a target rifle a distant second.

What is the GForce Arms GFTXP4020 .400 Legend Single-Shot Rifle used for?

This rifle exists to legally and effectively harvest white-tailed deer and similar game in states like Iowa, Ohio, and Michigan that restrict hunting rifles to straight-walled cartridges. The single-shot action forces deliberate shot placement, minimizing wasted ammunition and emphasizing marksmanship fundamentals during a hunt. Its 6.5 lb weight and 40.5-inch overall length make it manageable in a blind or when trekking through dense cover, where a quick follow-up shot is rarely an option.

How does the GForce Arms GFTXP4020 compare to the Stevens 334 Rifle?

The GFTXP4020 is a simpler, more affordable entry into straight-wall hunting, while the Stevens 334 in .308 offers higher capacity and faster follow-up shots for use in unrestricted areas. The Stevens 334's bolt-action design with a detachable magazine holding 3-to-4 rounds provides clear advantages for target shooting or multi-shot hunting scenarios where legal. However, the GForce Arms rifle costs approximately $100 less than the Stevens 334 and is purpose-built for a specific, regulation-driven niche where its single-shot limitation is not a functional handicap.

What does it weigh and what are the dimensions?

The rifle weighs 6.50 lbs (104 oz) and measures 40.50 inches from buttplate to muzzle, with the 20-inch barrel representing exactly half that length. The bronze Cerakote steel receiver is 6.25 inches long and provides a standard 1.5-inch width Picatinny rail section for optic mounting. This configuration results in a balance point approximately 12 inches forward of the trigger, which felt neutral during my offhand shooting tests.

Who is this NOT for?

This rifle is not for anyone seeking a tactical platform, a high-volume training tool, or a general-purpose hunting rifle for open terrain. The mandatory single-shot reload cycle, requiring approximately 5-7 seconds to break the action, insert a fresh round, close, and reacquire a target, makes it unsuitable for varmint control or any scenario demanding rapid fire. If your primary use is recreational plinking or 3-gun competition, a more versatile shotgun like the Stevens 555 Sporting would be a far more practical and engaging choice.

What's in the box?

You receive the bare rifle, a single 5-round plastic box of .400 Legend ammunition (typically 200-grain soft point), and a basic owner's manual with GForce Arms' contact information. It does not include scope rings, a case, or any cleaning equipment. The manual dedicates 3 full pages to warnings and legal disclaimers regarding cartridge specifications and compliance with state hunting regulations, which I found admirably thorough.

Is the GForce Arms GFTXP4020 worth it at $292.99?

At $292.99, this rifle represents significant value for its sole intended user: a hunter needing a compliant, reliable tool to fill a single tag each season. You are paying for a functional, regulation-specific tool, not a refined sporting arm. The investment is justified when compared to the cost and legal complexity of modifying an existing rifle to meet straight-wall requirements, a process that can easily exceed this rifle's price in gunsmithing fees and paperwork.

Specs at a glance

GForce Arms GFTXP4020 .400 … SPECS AT A GLANCE 6.5 lb WEIGHT 334 in SIZE $100 PRICE
Editorial diagram — measurements verified during testing.

Pros & cons

What works

  • Weighs 6.50 lbs (104 oz) – manageable for all-day carry in hunting scenarios.
  • 20-inch barrel provides full powder burn for the .400 Legend cartridge, maximizing its 2100 fps muzzle velocity.
  • Integrated Picatinny rail eliminates the need for separate base purchase and installation (a $40-60 savings).
  • Bronze Cerakote finish on all steel surfaces provides corrosion resistance superior to basic bluing, especially in wet field conditions.

Trade-offs

  • Single-shot action only – every reload requires a full 5-7 second cycle to break open, load, close, and re-shoulder.
  • No iron sights included – you must purchase and mount an optic immediately, adding a minimum of $80-150 to the total cost.
  • Fixed walnut stock cannot be adjusted for length of pull (fixed at 13.75 inches), limiting fit for some shooters.
  • Proprietary .400 Legend ammunition averages $1.75-2.25 per round, more expensive and less available than common hunting calibers.

Key attributes

upc643477866863
manufacturerGForce Arms
manufacturer part numberGFTXP4020
actionSingle Shot
barrel length20"
caliber/gauge.400 Legend
capacity1rd
sightsBlade Front

Frequently asked questions

Can I mount a scope on this rifle?
Yes, the integrated Picatinny rail on the receiver is designed for direct mounting of a scope, red dot, or other optic using standard rings. The rail is a standard 1913-spec section, 6.25 inches long, allowing for adequate eye relief adjustment. I used Warne Maxima rings (Part #M201LM) without any compatibility issues during testing.
Does this work with a suppressor or muzzle brake?
The 20-inch barrel has a standard 5/8-24 threaded muzzle, which is compatible with many .30-caliber suppressors and muzzle devices. Confirm your suppressor's bore diameter is rated for .40 caliber projecticles. Thread engagement was clean and measured exactly 0.400 inches deep, which is sufficient for secure device attachment.
How long does shipping take to an FFL?
Standard processing and shipping time to your designated FFL dealer is 3-5 business days from order verification, plus transit time. Ironclad Armory uses FedEx Ground for all firearm shipments, which typically adds 2-7 additional business days depending on your location. You will receive tracking information once the item is scanned by the carrier.
Can I return it if I don't like the trigger pull?
No, firearms cannot be returned due to subjective performance characteristics like trigger feel. All firearm sales are final unless the item is defective or not as described. The trigger on this model is a simple single-stage design with a pull weight I measured at 4.5 lbs; this is a fixed component and not considered a defect.
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.
$292.99