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M60A3 SLEP Tank Image #8
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Steel Aces Play for free
the highly anticipated MMO tactical tank shooter for 2024.

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Steel Aces Play for free
the highly anticipated MMO tactical tank shooter for 2024.


The M60A3 SLEP Tank (Service Life Extension Program) is an upgrade package for the M60A3 Main Battle Tank. Originally developed by Turkish Company "Standart Bio" the design was enhanced with additional technologies from the the American company Raytheon. To date, no upgrade packages have been purchased.


Standart Bio is a Turkish manufacturer of wheeled armoured vehicles, industrial vehicles likes snow ploughs and fire engines whose website backdates to 2006.

In 2011 the company released a press pack/marketing guide for an upgraded M60A3 called “The Affordable Main Battle Tank” which refers to (i) the cost of the upgrade package vs the cost of buying a new tank at the same standard/capabilities (ii) savings in operating costs/training as crews and mechanics were all ready familiar with the M60A3.

In 2016, the Raytheon Company (re-branded as RTX Corporation in 2023) released a video of the vehicle on their official YouTube channel titled “M60 Tank Service Life Extension Program” aka M60A3 SLEP.

Status …. Sadly Raytheon’s press services do not back date this far and no trace of the vehicle can be found on there website, but still remains on Standart Bio’s website.

From the images in documents and the video footage, its clear this is the same tank, but there a couple of subtle differences, namely the removal of Standart Bio Remote Weapon Station (though the mounting plate remains) and the main gun has been painted.

The upgrade package as a whole reflects American tank doctrine of superior firepower and mobility over armoured protection.

Firepower Upgrades

The principal change is the replacement of the 105mm rifled main gun with the same M256 120mm smoothbore as used on the M1A1/A2 Abram’s. A new Raytheon Fire Control System has been added, which has a laser range finder, muzzle reference system, wind sensor, thermal channel for the gunners sight and digital firing computer.

The secondary weapons have also been upgraded. In addition to the commanders 50. cal Machine Gun, a new remote weapon station with a 25mm chain gun has been fitted to the rear, left side of the turret roof. It features a dual channel sight for added situational awareness and is equipped with x300 rounds of ammunition.

The old hydraulic turret drive and gun stabilization have been replaced with new electrical systems. These aid in improved accuracy will firing on the move and detection speed as well as crew safety.

Mobility Upgrades

The refurbished hull features new improved hydropneumatic suspension. Standart Bio were offering an engine upgrade of an unspecified 1200hp diesel engine, whilst Raytheon offered a 950hp diesel engine, compared to the original 750hp one.

An Auxiliary Power Unit is fitted to the external rear of the hull. This can be used to power electrical systems when in an idol position as an alternative to running the main engine and avoiding unnecessary wear and tear.

Protection Upgrades

Both companies do not specify the upgrades in protection, in fact Raytheon does not even make reference to them what so ever. What is clear is that bar armour has been fitted the whole way round the turret, offering protection against RPG-7 attacks. Due to the turrets curved surfaces it is not physically possible to add laminate or composite ceramics, which require flat surfaces for application.

Some form of laminate armour has been added in small sections to the front of the hull and along its side in large sections.

in addition, a new fire detection and suppression system has been installed in the crew compartment and engine bay.

Additional systems include Air Conditioning for the crew.


Main Gun
M256 120mm Smoothbore
Secondary Weapons
Coaxial 7.62mm Machine Gun, commanders 50 cal machine gun, Remote Weapons Station with MG
Ammunition Storage
x40 120mm
750hp to 1200hp Diesel
Top Road Speed
Road Range
500 km
Fuel Capacity
1457 Litres
Vertical Obstacle
Water Capability
Trench Crossing
Side Slope
Length Gun Forward
Length Hull
3.63m (no side armour)
Ground Clearance
54+ Tonnes
NBC Protected
Standard Armor(s) Type
Optional Add-on Armor(s) Type
Laminated, Bar
Active Protection Systems
Commander, Gunner, Loader, Driver