Glide Bomb Kits Explained, JDAM-ER and Turkey’s HGK Family

Glide bomb kits turn ordinary unguided bombs into standoff precision weapons, and the two most instructive examples, Boeing’s JDAM-ER and Turkey’s HGK family with its winged KGK cousin, stretch a bomb’s reach from a few kilometers to 70 or more. The idea is brutally cost-effective, the bomb already exists, the kit adds guidance and wings for a fraction of a missile’s price.

~72 km

JDAM-ER range from high-altitude release

3x

Range gain of a wing kit over a tail-kit-only bomb

Mk 82/84

Standard bomb bodies the kits bolt onto

<$100K

Typical kit cost, far below a cruise missile

How do glide bomb kits work

A guidance kit replaces a bomb’s tail with GPS-aided inertial navigation and movable fins, that alone, the classic JDAM or Turkey’s baseline HGK, makes the bomb accurate but barely extends reach beyond the ballistic throw of the aircraft, roughly 15 to 28 kilometers from high altitude. The glide kit adds the second ingredient, pop-out wings. Released high and fast, a winged bomb trades altitude for distance at glide ratios that triple its reach, letting the launch aircraft stay outside short-range air defenses.

Anatomy of a glide bomb

Component	Function
Bomb body	Mk 82 (500 lb), Mk 83 (1,000 lb) or Mk 84 (2,000 lb) warhead and case
Guidance tail kit	GPS-aided inertial navigation unit and movable control fins
Wing kit	Folding wings that deploy after release to extend glide range
Interface	Aircraft passes target coordinates before release; no datalink needed after

Generic architecture shared by JDAM-ER, KGK and comparable kits.

The appeal is arithmetic. Air forces hold tens of thousands of Mk 82 and Mk 84 bomb bodies; a kit costing tens of thousands of dollars converts each into a standoff weapon, where a cruise missile costing a million or more would otherwise be the only option.

JDAM-ER explained

JDAM-ER pairs the standard JDAM tail kit with a modular wing set developed with Australia’s defense science organization, which flight-tested the concept on 500-lb Mk 82 bombs. The wings extend range from roughly 24 kilometers to about 72 from high-altitude release while keeping the same GPS-aided accuracy. Boeing builds the kits cheaply enough that they are treated as consumables, and integration spans aircraft from F-16s to Australia’s Hornets.

Turkey’s HGK and KGK kits

US and Turkish kits compared

Kit	Type	Bomb body	Range (high release)
JDAM	Tail guidance kit	Mk 82/83/84, BLU series	Up to ~24 km
JDAM-ER	Tail kit + wing kit	Mk 82 (integrations growing)	About 72 km
HGK	Tail guidance kit (TUBITAK SAGE)	Mk 84, Mk 83, penetrators	Roughly 15–28 km
KGK	Wing-assisted guidance kit	Mk 82 / Mk 83	Reported beyond 100 km
GAZAP/teber families	Related Turkish precision kits	Various	Varies by configuration

Ranges depend heavily on release altitude and speed; figures per manufacturer statements.

Turkey’s TUBITAK SAGE research institute and ASELSAN produce the HGK, Hassas Güdüm Kiti or precision guidance kit, the Turkish answer to JDAM, GPS/INS tail kits for 2,000-lb Mk 84s and other bodies. The KGK, Kanatlı Güdüm Kiti or winged guidance kit, is the glide counterpart, folding wings that carry a Mk 82 or Mk 83 reportedly beyond 100 kilometers from high release. The kits arm Turkish F-16s and, increasingly, heavy drones, the Bayraktar Akinci has dropped both in tests and combat trials, and they anchor the munitions ecosystem alongside Roketsan’s missile lines.

Glide bombs in Ukraine and beyond

Ukraine received JDAM-ER kits from 2023 and has used them from its F-16s and modified Soviet-era jets, with operator-reported results against bridges, headquarters and fortifications. Russia answered at industrial scale with its own UMPK wing kits bolted onto FAB-500 and heavier bombs, per Russian state media claims released by the thousand each month, and those glide bombs became one of the war’s most destructive weapons against Ukrainian front-line cities. The lesson cuts both ways, cheap standoff mass works, and defending against it is miserable.

Limits, jamming and defenses

Glide kits inherit every weakness of satellite navigation. Dense GPS jamming in Ukraine has, per operator-reported accounts on both sides, degraded accuracy of JDAM-class and UMPK weapons alike, driving upgrades like anti-jam antennas and home-on-jam seekers. A gliding bomb is also slow and unpowered, modern medium-range air defenses can intercept it, so the tactic is saturation, releasing more cheap bombs than the defense has affordable interceptors, the same cost-exchange logic that governs drone warfare.

Editor’s read

The glide kit is the munitions story of the decade hiding in plain sight, precision went from a luxury to a commodity, and standoff followed it. JDAM-ER and KGK matter less as individual products than as proof that any air force with bomb stocks and a kit line can generate cruise-missile-like effects at artillery-like prices. The next competition is guidance that survives jamming, not wings.

Glide bomb kits frequently asked questions

What is the range of a JDAM-ER?

About 72 kilometers when released high and fast, roughly triple the reach of a standard JDAM.

What is the difference between HGK and KGK?

HGK is Turkey’s GPS/INS tail guidance kit, comparable to JDAM; KGK adds folding wings for glide range reported beyond 100 kilometers.

Are glide bombs accurate under GPS jamming?

Accuracy degrades; operator-reported accounts from Ukraine show meaningful drift under heavy jamming, which anti-jam receivers and inertial fallback partly mitigate.

Can air defenses shoot down glide bombs?

Yes, they are slow, non-maneuvering targets for medium-range systems, but their low cost lets attackers saturate defenses economically.

Why use a glide kit instead of a cruise missile?

Cost. A kit converts an existing bomb for tens of thousands of dollars, versus a million or more per cruise missile, at the price of shorter range and no propulsion.

Sources