F90 只係 EF88 的外銷版...
https://en.wikipedia.org/wiki/Steyr_AUG#Australian_versions_2
EF88: The Enhanced F88 (EF88) is part of the LAND 125 Soldier Combat System project and is a significant upgrade to the F88SA2. It was
developed and produced at the Australian Defense Industries factory in Lithgow Small Arms Factory, which is now owned by Thales Australia to fulfill current and near future requirements for the Australian Defence Force and is also intended for export (F90). It was first displayed to the public in the middle of 2012 and the initial production was scheduled for 2013, its final design and testing ended later on that year.[31] While internally and externally the EF88 is still similar to the Steyr AUG, it has received many distinctive upgrades and changes. Upgrades include the following:
1. Length of pull has been
shortened by 15 mm. (
The distance between the stock backplate and the grip; too long and it becomes difficult to handle on close quarters)
2. Longer top rail and a modular lower forend with side and bottom rails.
3.
Floating barrel which increases accuracy.
4.
Fluted Barrel which dissipates heat from automatic fire.
5. Folding charging handle.
6. Improved butt design which has increased strength and a recessed ejection port cover to improve reliability.
7. Bolt-together butt for easier disassembly.
8. Cyclic rate of fire of 850 rounds per minute (RPM).
9. Provision for electronic architecture to allow centralized control and power management of ancillary devices.
10. Primarily uses the side-loading grenade launcher (Steyr-Mannlicher SL40) which can fire all currently available 40 mm low velocity grenades.
11. Improved grenade launcher mount which improves the balance of the weapon.
12. Improved grenade launcher safety, the new KORD RIC (Rifle Input Control) electronic control system made by Thales will also be integrated into the rifle.[30][32][33]
F90: The intended for
export version of the EF88. In June 2012, Thales debuted the F90 at the Eurosatory military exhibition in Paris.
Key additions include a bottom rail and a detachable side rail, optional compatibility with STANAG magazines, weight savings over the F88SA2 with a base weight of 3.25 kg (7 lb) and
the large trigger guard has been reshaped to serve as a vertical foregrip. Thales in partnership with Steyr-Mannlicher are pursuing small arms procurement programs such as the planned replacement of FAMAS rifle used by the French military. F90 variants include Grenadier, Marksman (508 mm (20 in) barrel) and Close Quarters Battle (360 mm (14 in) barrel).[34] Low Rate Initial Production of the F90 began in September 2014.[35] Dasan Manufacturing will be licensed to manufacture them in an effort to bid them to the South Korean military for future replacements of the Daewoo K2.[36] At the Defexpo 2018 convention, MKU has Indian licensing rights to manufacture the F90 for Indian contracts.[37]
