The munition takes its name from Rafael's Spike missile family, and its canister is built to be compatible with existing Spike-NLOS launchers already fielded on land vehicles, ships, and aircraft pylons.^2,10 It should not be confused with the Spike-SR or Spike Firefly, Rafael's much smaller, drone-like man-portable loitering munition, which was itself renamed L-Spike 1x at the same October 2025 AUSA event.⁸ Where L-Spike 1x is a roughly 2.2 kg, hand-launched hovering munition built for squad-level urban combat, the L-Spike 4X is a roughly 50 kg, rocket-propelled round built for a 40 km engagement envelope from vehicle, ship, or aircraft launchers — placing the two systems at opposite ends of the same Spike-branded loitering-munition lineup rather than presenting them as competing products.^6,8

As of this writing, the L-Spike 4X remains a pre-production system: Rafael and trade press describe it at technology readiness level 5-6, with testing planned for 2026 and production targeted for late 2027 or early 2028, and no country has publicly ordered or fielded it.^2,4,9

Rafael describes the L-Spike 4X's airframe as a cruciform-wing design, with four forward and four aft control surfaces that fold flat for canister storage and deploy automatically after launch.² The complete round, including its launch canister, weighs approximately 50 kg according to Rafael material relayed at AUSA 2025, though this figure has not been broken out into airframe-only weight or independently confirmed on a public datasheet.^6,9

Propulsion is rocket-based rather than the small electric motors used by most drone-derived loitering munitions; European Security & Defence's coverage of the AUSA unveiling specifically noted a visible exhaust plume during the munition's demonstration footage.² Rafael states the round reaches its 40 km engagement envelope in about five minutes, a figure that implies an average transit speed on the order of 480 km/h, though Rafael has not published a discrete maximum-speed specification separate from that range-and-time figure.^1,4,5 Once over the target area, the munition can loiter for confirmation and strike authorization for up to 25 minutes, with one secondary source describing the loiter window as up to 30 minutes.^1,2,4,5

Guidance combines a day-television and infrared electro-optical seeker with AI-enabled automatic target recognition and image acquisition, feeding live video to the operator through the loiter phase.^4,5,7 Rafael emphasizes hardened, jam-resistant communications and navigation intended to function in GPS-denied and electronically contested environments, a design priority aimed at contested airspace rather than the permissive settings most earlier loitering munitions were built for.^4,5

Two warhead options were disclosed at the AUSA unveiling: a tandem-HEAT shaped charge for armored targets and a multi-purpose blast/fragmentation warhead for vehicles and fortified points; European Security & Defence additionally reported a penetration blast/fragmentation warhead as a planned future option.^1,2,4,6

Control follows a man-in-the-loop model: the system's autonomy stack performs target recognition and proposes engagements, but a human operator authorizes each strike, and Rafael states a single operator can supervise up to four L-Spike 4X rounds simultaneously, retargeting or aborting individual munitions in salvo as conditions change.^4,6,7

The canister form factor is built for compatibility with Rafael's existing Spike-NLOS launch architecture, meaning it can in principle be fired from the same multi-platform launchers already integrated onto land vehicles, ships, and aircraft pylons that operate other Spike-NLOS missiles; Rafael has shown a rendering of the munition launched from an AH-64 Apache, though no confirmed live integration test on that platform has been reported.^2,3,6,10

Rafael USA unveiled the L-Spike 4X at AUSA 2025, the Association of the United States Army's annual exposition in Washington, D.C., held 13-15 October 2025, presenting it as a new addition to the Spike missile family rather than a separate product line.^1,4,6 The same event saw Rafael redesignate its much smaller Spike Firefly loitering munition as L-Spike 1x, establishing "L-Spike" as a shared naming convention across the company's loitering-munition portfolio rather than a name unique to the new 4X round.⁸

Rafael positioned the L-Spike 4X squarely against the US Army's Launched Effects requirement, a program intended to field autonomous, multi-domain-launched strike and reconnaissance systems at every Army division by the end of 2026.⁷ A Rafael representative was quoted framing the pitch directly: "L-SPIKE 4X aligns closely with the capabilities required by U.S. and allied forces — resilient, precise, and operator-controlled effects launched from multiple platforms."⁷

As of the October 2025 unveiling, industry sources described the program at technology readiness level 5-6, with flight testing planned for 2026 and full-rate production targeted for late 2027 or early 2028; no procurement contract, customer, or unit price had been disclosed.^2,4,9

The L-Spike 4X sits in an unusual position among loitering munitions in this archive: its 40 km range matches or approaches the largest drone-derived systems, but its rocket propulsion and roughly 50 kg canistered weight put it in a different design category entirely. AeroVironment's Switchblade 600 is the closest system by range class — a 22.7 kg airframe (54.5 kg with tube and fire-control system) that flies out to 40 km in about 20 minutes on electric propulsion, then loiters roughly 20 more minutes for an 80 km total mission radius, versus the L-Spike 4X's stated five-minute rocket-powered dash to 40 km followed by up to 25 minutes on station.¹¹ The two systems trade an electric drone's longer transit time for a rocket's faster arrival, a design choice that shortens the target's warning window at the cost of a shorter total loiter budget.

Russia's ZALA Lancet, by contrast, is built for sustained patrol rather than a fast dash: it carries up to a 12 kg airframe with a 3-5 kg-plus warhead out to a stated 40 km range and can loiter for roughly 40 minutes to an hour, prioritizing time over a target area over transit speed.¹³ MBDA's Akeron RCX50 illustrates the opposite end of the size spectrum: at about 2 kg and man-portable, it reaches only about 10 km with roughly 40 minutes of endurance, trading the L-Spike 4X's standoff range and armor-penetrating tandem-HEAT warhead for one soldier's ability to carry and launch it without a vehicle.¹²

MASS Assessment

The L-Spike 4X's ten MASS components read as a genuinely fast, precise missile-like system rather than a classic loitering munition — and its weakest score reflects exactly that design choice.

Precision (90) is the highest of any weapon in this batch, credited to tandem-HEAT and multi-purpose warheads paired with AI-assisted automatic target recognition and a salvo-of-four control scheme that keeps a human operator confirming each shot. Lethality (80), sensors (80), technology (85), and counter-measure resistance (70) all score well for the same underlying reason: the L-Spike 4X is built as a rocket-propelled "Launched Effect" for contested, GPS-denied environments, a more advanced propulsion and guidance concept than the propeller- or rotor-driven munitions that make up most of this batch.

Loiter endurance (20) is the lowest score of any component here, tied with Bolt-M's, and it is a direct consequence of the L-Spike 4X's design: roughly a 5-minute transit to its 40 km engagement envelope followed by only about 25 minutes on station, a genuine missile-dash profile rather than a slow search-and-loiter pattern. Autonomy (60) sits at the middle of the range rather than scoring as high as the system's AI-assisted targeting might suggest, because Rafael's own materials describe man-in-the-loop confirmation as mandatory — this is explicitly not an autonomous-release weapon. Range (40) and portability (60) track its disclosed 40 km envelope and roughly 50 kg canister-loaded weight fairly directly.

Cost-effectiveness (50) deserves a specific caveat: Rafael has disclosed no price at all for the L-Spike 4X, unlike every other weapon in this batch, which has at least a rough figure. Both this component score and the separate 85/100 overall price-performance rating shown in the sidebar are necessarily more speculative here than anywhere else in this batch — treat them as provisional estimates of a pre-production, TRL 5-6 system rather than assessments grounded in a disclosed contract price.

What is the Rafael L-Spike 4X? A missile-based loitering munition unveiled by Rafael USA at AUSA 2025 in October 2025, built for a 40 km engagement envelope with a five-minute transit and up to roughly 25 minutes of loiter time, fired from canisters compatible with existing Spike-NLOS launchers.^1,2,4

Is the L-Spike 4X in service? No. As of its October 2025 unveiling it sat at technology readiness level 5-6, with testing planned for 2026 and production targeted for late 2027 or early 2028; no country has publicly ordered or fielded it.^2,4,9

How is the L-Spike 4X different from the Spike Firefly or L-Spike 1x? They are separate products under the same renamed Spike naming scheme. Spike Firefly, redesignated L-Spike 1x at the same October 2025 event, is a roughly 2.2 kg hand-launched hovering munition for squad-level urban combat with about 5 km of range. The L-Spike 4X is a roughly 50 kg canistered, rocket-propelled round for vehicle, ship, or aircraft launch with a 40 km range.^8,6

What warheads does the L-Spike 4X carry? Rafael has disclosed a tandem-HEAT shaped-charge warhead for armor and a multi-purpose blast/fragmentation warhead for vehicles and fortified points, with a penetration blast/fragmentation option reported as planned.^1,2,4,6