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S&T ST-57 Full Metal Airsoft AEG Rifle (m4 using P90 magazine)

ID: 46061 (AEG-ST57)
4.1 stars, based on 26 reviews
S&T ST-57 Full Metal Airsoft AEG Rifle (m4 using P90 magazine)
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This item is currently Sold Out

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
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Free shipping within lower 48 US states, no coupon code needed!


  • Full Metal Receiver
  • RIS Front End for Tactical Accessories
  • Unique Design with P90 Magazine Integrated Along Top Rail
  • Ergonomic Pistol Grip
  • Flip-up Front and Rear Sights
  • Mock Charging Handle
  • Retractable Crane Stock

FPS Range: 380-415

Color: Black

The ST-57 AEG utilizes a modified Ver.2 Gearbox with 8mm bearings and a proprietary hopup design that provides a great level of adjustment and accuracy. The full metal rail system up front provides a stable platform for tactical accessories and the tops rails are great for optics and the included flip-up sights. The gun is wired to the stock so any 9.6v Crane style / butterfly type battery will fit perfectly. All in all the ST-57 is an extremely solid, and very unique twist on a classic design.

Length: 735mm-840mm, Adjustable
Weight: 2950g
Inner Barrel: 300mm
Magazine Capacity: 68rds. Works with Matrix, Tokyo Marui and other compatible P90 Series Airsoft AEG Magazines (Not compatible with M4 / M16 Series Magazines)
Muzzle Velocity: 380~415 FPS (Measured with 0.20g BBs)
Thread Direction: 14mm Negative
Gearbox: Modified Ver 2
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 9.6v Small Butterfly Type recommended (Wired to the Stock with a Small Tamiya Connector. Battery and charger sold separately.)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine

Manufacturer: S&T

About S&T

S&T is a group of Airsoft enthusiasts that produces rifles and parts based on the trends in the Airsoft industry. Their mission is to supply a wide range of quality products with the most competitive pricing for dealers and consumers alike. S&T was founded in 2009 with their HQ office located in Hong Kong, a subsidiary office in Japan, as well as Airsoft / Airgun manufacturing facilities in China.

26 Customer Reviews

(Write a review)

by Harrison S. on 09/16/2019
"This gun is solid
I got it because it looks dumb and i wanted a p90 but without a version 6 gearbox

Fast fire rate
very very very accurate
comes with a small grip
solid gun overall

Very heavy and kind of awkward to carry around
the orange tip is super easy to break
I dropped it and now it only fires in full auto (pro or con) so don't drop it

overall good gun but don't buy it as a starter gun like i did
by Seth B. on 02/29/2016
"I've had this gun for about four months now and it has definitely surpassed my expectations. The trigger response is crisp and the rate of fire is very respectable, all with the included battery. The accuracy and range of the gun is also very decent for a stock gun. The included battery is a 9.6v 1200mah nun-chuck style and lasts quite a while on a full charge. The two included 70 round midcaps take some breaking in but feed very well and hold 70 bbs once broken in. I also ordered some of the "Matrix P90 70 Round Midcaps" and they feed wonderfully in this gun. I also personally like the fact that the gun is a little weird but still retains decent looks and feels a little like other AR style platforms. I have been able to field this gun a couple times and even took it to a smaller milsim event where it performed spectacularly, it got fallen on, splashed with mud, smacked around a little bit and held up to all of it. All in all, this gun has made me a very proud owner and I would highly recommend it to anyone.

-trigger response
-rate of fire
-includes a 9.6v battery
-includes 2 midcap magazines
-includes front and rear metal iron sights
-lots of rail space for accessories
-easily maneuverable due to its length

-not a lot of space for an optic
-upper receiver has a little wobble (easily fixed with some electrical tape on the tabs towards the back of the upper receiver)
-does take some time to get used to reloading (reloading is very easy once you have some practice)
-a little on the heavy side (not necessarily a con, just something to note)
by jeff m. on 12/26/2015
"This is a great gun for the money. I got it on sale for $130. Full metal and shoots at 390 FPS with a very high ROF. I got a hi-cap mag and it doesnt feed well about half the time. Planning on trying MAG 170 round mid caps, because the mid caps I got with the gun are great. Overall: Gun is great but the hi cap mags are really bad.

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