Why NATO Is Buying Guns Again: Skynex and the New Economics of Drone Defence

Image: Ukrainian Air Force, Air Command West / Wikimedia Commons (CC BY 4.0)

For thirty years NATO air defence doctrine treated the gun as a museum piece: missiles had won. Then came the cheap drone — and the arithmetic collapsed. Patriot interceptors costing millions were chasing Shaheds costing tens of thousands; European airports were closing over hobby-grade quadcopters no missile battery could sensibly engage. The alliance’s procurement answer to that humiliation has a name from the past: the 35 mm cannon. Rheinmetall’s Skynex is its most successful expression — four systems guarding Ukraine’s power grid with verified kills up to cruise-missile class, a first Italian battery handed over in December 2025, a Qatari installation quietly running since before the trend had a name, and Romania next in line.

At a Glance

Manufacturer	Rheinmetall Air Defence (Zurich) + Rheinmetall Italia
Market segment	Gun-based point defence / C-UAS — the inner ring of layered air defence
Core architecture	Skymaster C2 network + 35 mm Revolver Gun Mk3 firing units
Killer feature	AHEAD airburst rounds — thousands of euros per engagement
Combat record	Ukraine: Shahed drones, Kh-101 and Kalibr cruise missiles
Customer base	Ukraine (4), Italy (1 + 3 options), Qatar, Romania (selected)
Sibling product	Skyranger 30/35 turret for mobile forces
Main rivals	Centurion C-RAM, KORKUT family, K30 Biho hybrid

The Procurement Story: How a Cannon Got Back on NATO’s Shopping List

Skynex did not win its market at a trade fair; it won it in a cost-exchange spreadsheet. When Russia industrialised Shahed raids against Ukraine’s grid, every Western capital saw the same problem: interceptor missiles are a finite, slow-to-produce resource, and burning a six-figure round against a five-figure drone is a strategy that loses by winning. Germany’s answer in December 2022 was to fund two Skynex systems for Kyiv — about EUR 182 million including the ammunition chain — later doubled to four, with Rheinmetall confirming completion of deliveries in November 2025.

The drone incursions that shut European airports through 2025 turned a Ukrainian lesson into a NATO-wide requirement. Gun-based point defence — survivable against jamming, bottomless of magazine compared with missile batteries, cheap per shot — moved from legacy line item to priority capability. Italy ordered in January 2025 (EUR 73 million for the first system, three options), took delivery at Sabaudia in December, and Romania selected a Skynex architecture wrapped around the GDF-009 guns it already owns — the network-over-platform sales pitch working exactly as designed.

What the System Actually Is — and Is Not

Skynex is best understood as a network that happens to shoot. At its centre sits the Oerlikon Skymaster battle-management node; radars, electro-optics and firing units plug into it like peripherals, and Rheinmetall deliberately keeps the interfaces open to third-party sensors and legacy guns. The standard effector is the containerised 35 mm Revolver Gun Mk3 — 1,000 rounds per minute, each AHEAD round muzzle-programmed to burst into a cone of 152 tungsten sub-projectiles in front of the target. No guidance link to jam, no direct hit required.

Equally important is what Skynex does not claim: anything beyond roughly four kilometres (six against hard targets), anything ballistic, anything at altitude. It is the inner ring of a layered defence — the layer that lets Patriot and IRIS-T save their magazines for the threats only they can touch. Ukraine codified that division of labour into doctrine; NATO planning documents now copy it.

The Combat Ledger: From Shaheds to Cruise Missiles

The system’s Ukrainian service record is the marketing department’s dream and the analyst’s dataset. Deployed around power infrastructure in western Ukraine, Skynex batteries conduct routine night engagements against Shahed waves — Ukraine’s Air Force, whose Air Command West took this article’s cover photo, publicly rated the results ‘impeccable’. The genuinely class-shifting development came when the same 35 mm fire began downing Kh-101 and Kalibr cruise missiles: low, straight flight profiles proved programmable airburst rounds could handle targets doctrine had reserved for missiles.

Defense Express’s cost analysis closes the loop: at roughly EUR 90 million per delivered system including support, and thousands of euros per engagement, a Skynex battery pays for its capital cost in intercepted Shaheds within months of sustained raids. That arithmetic — not the engineering — is why the order book keeps growing.

Technical Specifications

Manufacturer	Rheinmetall Air Defence AG (Zurich) / Rheinmetall Italia
Type	Networked gun-based SHORAD / C-UAS / C-RAM
Command and control	Oerlikon Skymaster BMS — sensor- and effector-agnostic
Primary firing unit	Oerlikon Revolver Gun Mk3, 35×228 mm revolver cannon
Rate of fire	1,000 rds/min per firing unit
Ammunition	AHEAD/KETF airburst (152 tungsten sub-projectiles) + standard 35 mm family
Effective gun range	≈4 km; extended capability to 6 km vs hard targets
Missile integration	Optional SHORAD missiles extend soft-target coverage to 10 km
Radar	X-TAR3D-class 3D search radars; tracking radar on each firing unit
Target set	Drones, cruise missiles, RAM, helicopters, slow aircraft
Emplacement	Containerised/fixed-site; towed and vehicle-mounted options
Future effectors	GDF-009 TREO, high-energy laser (on integration roadmap)

Skynex vs KORKUT, GOKDENIZ, Centurion and K30 Biho — rate of fire and gun range (Envanter Medya chart)

Operators and Contracts

Publicly confirmed Skynex commitments as of June 2026.

Country	Status	Scope	Known value
Ukraine	Deliveries complete (Nov 2025)	4 systems funded by Germany; energy-infrastructure protection	≈EUR 182M (initial 2-system package)
Italy	In service (first delivery Dec 2025)	1 system + 3 options — Air Defence Artillery Command, Sabaudia	EUR 73M (first system)
Qatar	In service	Early configuration: 8x Mk3 guns + X-TAR3D — base and energy-site defence	Not disclosed
Romania	Selected / in procurement	Skynex architecture combined with existing GDF-009 guns	Not disclosed

In-Depth Analysis

Procurement Outlook: Who Buys Next

Three demand pools are visible. First, the Ukraine-adjacent: Eastern European states hardening power grids and logistics hubs — Romania is the template, pairing Skynex networking with guns already in inventory, financed under the EU’s SAFE umbrella. Second, the airport-incident club: Western European governments that spent 2025 explaining drone closures to parliaments and now budget for permanent C-UAS at critical sites; Italy’s Sabaudia battery is the first of what its army describes as a layered national roll-out. Third, the Gulf, where Qatar’s quiet eight-gun installation has guarded energy and base infrastructure since before the European panic began. Rheinmetall’s 2024 announcement of a further undisclosed European customer suggests the second pool is already converting. The constraint to watch is not demand but 35 mm AHEAD production capacity — the same bottleneck Ukraine’s consumption rates exposed.

The Skyranger Sibling: One Family, Two Markets

Skynex answers fixed-site protection; its turret sibling Skyranger 30 answers the manoeuvre force. Same fire-control philosophy, same airburst principle, different chassis — Skyranger rides on Boxer, Lynx or trucks and has its own NATO order wave (Germany, Austria, Denmark, Hungary among committed or selecting users). For procurement offices the family logic matters: one ammunition chain, one training pipeline, two deployment models. Expect tenders increasingly to bundle them — and expect rivals to attack the bundle by offering hybrid gun-missile single platforms like the K30 Biho or Pantsir class.

Strengths Through a NATO Lens

Cost-exchange dominance: thousands of euros per kill against five-figure drones — the only sustainable arithmetic for permanent infrastructure defence.
Combat-proven at class-above targets: verified cruise-missile kills move guns from ‘last ditch’ to ‘planned layer’.
Jamming immunity: programmed rounds need no datalink; GPS denial is irrelevant.
Open architecture: third-party radars and legacy guns integrate — Romania’s GDF-009 fleet gains a second life, a template for every NATO army with old 35 mm stock.
Magazine depth: gun ammunition replenishes in days, not the years interceptor missiles now take.

Weaknesses and Honest Limits

Four-to-six-kilometre ceiling: physics, not firmware — everything beyond needs missiles.
Point, not area, defence: one system guards one site; national coverage means dozens of batteries and serious money.
Static by design: container architecture is wrong for brigades on the move; that is Skyranger’s job, at extra cost.
System price vs round price: cheap engagements, expensive launchers — tens of millions per battery strains smaller budgets.
Ammunition single-source risk: AHEAD output concentrates in few lines; wartime consumption makes stockpile contracts as important as the launcher buy.

The Competitive Field

Centurion C-RAM (USA): the legacy benchmark — 20 mm, shorter reach, smaller burst effect; in sustainment, not growth.
KORKUT / GOKDENIZ (ASELSAN, Türkiye): the most complete rival family — same 35 mm airburst philosophy with sovereign ATOM ammunition, self-propelled and naval variants, and Turkish export pricing; the competitor Skynex will meet most often in Gulf and Asian tenders.
K30 Biho hybrid (Hanwha): gun-missile mix with a UAE reference and aggressive Korean industrial offers.
Pantsir-S1 (Russia): politically unavailable to NATO-aligned buyers and battle-worn in reputation.
MSI Terrahawk, EOS Slinger et al.: the light-turret insurgency from below — cheaper, smaller, eating the low end of the C-UAS market.

Where the System Fits Best

Power grids and energy corridors: the Ukrainian use case, directly transferable to any state bordering the threat.
Airports and ports: low collateral airburst debris makes guns the politically tolerable option over civilian-adjacent ground.
Forward operating bases: the original Qatari mission — base and energy-site point defence in open terrain.
Naval facilities: fixed seaward batteries work; salt air raises the maintenance bill.
Mountainous terrain: masking eats gun range — demands a denser, costlier sensor net.
The mobile battlefield: not Skynex’s job; buy the turret sibling.

Turkish Counterparts: How They Compare

No comparison illuminates Skynex better than Türkiye’s KORKUT-GOKDENIZ family — because it is not a paper rival but a parallel, sovereign implementation of the same idea. ASELSAN’s ATOM airburst round mirrors AHEAD’s muzzle-programmed tungsten cloud; KORKUT carries twin 35 mm guns on an amphibious tracked hull that moves with brigades — the mobility Skynex deliberately delegates to Skyranger — and GOKDENIZ takes the same fire unit to sea. All of it runs on Türkiye’s national HERIKKS command network inside the Steel Dome architecture, and all of it is in series production with Turkish forces.

For NATO-market readers the significance is competitive: in every Gulf or Central Asian C-UAS tender of the coming decade, the German network and the Turkish family will sit on the same shortlist — one selling a Ukrainian combat record and open architecture, the other selling mobility, sovereign ammunition and price. It is one of the few segments where a mid-tier defence industry competes with Rheinmetall head-on, product for product.

Feature	Skynex	KORKUT	GOKDENIZ
Manufacturer	Rheinmetall	ASELSAN + FNSS	ASELSAN
Calibre / gun	35 mm revolver (Mk3)	35 mm twin	35 mm twin
Smart round	AHEAD (KETF)	ATOM airburst	ATOM airburst
Platform	Container/fixed + towed	Tracked amphibious — mobile	Shipborne CIWS
Combat reference	Ukraine: drone + cruise-missile kills	In Turkish Army service	Fleet service
Status	4 customers/users	Series production + export talks	Series production

AHEAD and ATOM are independent implementations of the same airburst principle; figures are manufacturer claims.

Envanter Medya Assessment

Skynex’s real product is not a cannon — it is a procurement argument: that permanent defence of fixed infrastructure must be priced per engagement, not per interceptor, and that the only sustainable per-engagement price comes out of a gun barrel. Ukraine supplied the proof, European airport closures supplied the urgency, and the order book now supplies the verdict. Two caveats keep the analysis honest. First, the system’s economics depend on an ammunition industrial base that is still scaling — a Skynex without AHEAD stock is street furniture. Second, the segment it created is getting crowded fast, and the most serious crowd-member is Turkish: the KORKUT family matches the philosophy, adds mobility and undercuts on price. Rheinmetall built the category; holding it will be the harder job.

Frequently Asked Questions

Why are NATO armies returning to gun air defence?

Because drone-era cost exchange broke the missile-only model: six-figure interceptors against five-figure drones is unsustainable, and 2025’s airport drone closures made the gap politically visible. Guns offer thousands-of-euros engagements, deep magazines and jamming immunity for the inner defensive ring.

What did Skynex actually shoot down in Ukraine?

Routine Shahed/Geran intercepts around power infrastructure, plus verified kills of Kh-101 and Kalibr cruise missiles — the achievement that moved gun defence up a target class. Ukraine’s Air Force publicly rated the system’s results ‘impeccable’.

How does AHEAD ammunition work without guidance?

A muzzle coil measures each round’s exact velocity and programs its fuse to burst just ahead of the target, releasing 152 tungsten sub-projectiles in a cone. The target flies into the cloud — no datalink, no GPS, nothing to jam.

What is the difference between Skynex and Skyranger?

Same family, different missions: Skynex is a containerised network for fixed sites (plants, bases, airports); Skyranger is a turret on Boxer/Lynx/trucks for forces on the move. Several NATO armies are buying both as complementary layers.

Who operates Skynex today?

Ukraine (four systems, deliveries completed November 2025), Italy (first battery at Sabaudia, three options), Qatar (an early eight-gun configuration guarding bases and energy sites) and Romania as the selected architecture — plus an undisclosed European customer announced in 2024.

What is its closest competitor?

By philosophy, Türkiye’s ASELSAN KORKUT family — the same 35 mm airburst principle with sovereign ammunition and a mobile tracked platform. By legacy, the US Centurion C-RAM; by configuration, Korean and Russian gun-missile hybrids.

Skynex turned the oldest idea in air defence into the segment NATO cannot stop funding. The next chapters to watch: Romania’s contract signature, the undisclosed European customer’s reveal, AHEAD capacity expansion — and the first tender where the German network meets the Turkish KORKUT family with everything on the line. Envanter Medya follows all four.