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The Aerojet Rocketdyne RS-25, otherwise known as the Space Shuttle main engine (SSME), is a liquid-fuel cryogenic rocket engine that was used on NASA's Space Shuttle. NASA is planning to continue using the RS-25 on the Space Shuttle's successor, the Space Launch System (SLS).
Designed and manufactured in the United States by Rocketdyne (later known as Pratt & Whitney Rocketdyne and Aerojet Rocketdyne), the RS-25 burns cryogenic liquid hydrogen and liquid oxygen propellants, with each engine producing 1,859 kN (418,000 lbf) of thrust at liftoff. Although the RS-25 can trace its heritage back to the 1960s, concerted development of the engine began in the 1970s, with the first flight, STS-1, occurring on April 12, 1981. The RS-25 has undergone several upgrades over its operational history to improve the engine's reliability, safety, and maintenance load.
The engine produces a specific impulse (Isp) of 452 seconds (4.43 km/s) in a vacuum, or 366 seconds (3.59 km/s) at sea level, has a mass of approximately 3.5 tonnes (7,700 pounds), and is capable of throttling between 67% and 109% of its rated power level in one-percent increments. The RS-25 operates at temperatures ranging from −253 °C (−423 °F) to 3300 °C (6000 °F).The Space Shuttle used a cluster of three RS-25 engines mounted in the stern structure of the orbiter, with fuel being drawn from the external tank. The engines were used for propulsion during the entirety of the spacecraft's ascent, with additional thrust being provided by two solid rocket boosters and the orbiter's two AJ-10 orbital maneuvering system engines. Following each flight, the RS-25 engines were removed from the orbiter, inspected, and refurbished before being reused on another mission.
If an item is not marked as sold it's still available!
Knight's Armament Aimpoint micro quick detach mount kit. PN: 25682. Used, has some wear/threadlock residue. $40
LaRue LT660 lower 1/3 co-witness Aimpoint micro quick detach mount. Used $30 SOLD.
RS Regulate AK-301M & AKML side rail...
Basically new RS Regulate AKR upper mount. Mounted to lower mount but never shot with an optic. Includes what you see. THIS DOES NOT INCLUDE THE LOWER MOUNT. These are very hard to get your hands on.
$65 cash in the Oregon City/West Linn area.
Bought this a year ago, mounted to my WASR and fired 100rds through her. I think the screws I used to mount are from the optic itself, so screws aren’t included. No box or papers, I thought I’d be keeping this setup forever but you know how that goes :rolleyes:
This is the last generation mount...
RS Regulate side rail mount AK-303-M
RS Regulate adjustable picatinny rail (2 Pieces)
These are as good as it gets in my opinion to add an optic to your AKM
Make sure the AK-303-M is the correct one you need via their website.
I want to mount a Holosun or RMR to an AK for fun and need a mount. Would consider any mount that will work but prefer a RS Regulate. Seems a Midwest Industries could work too.
Cash or trade available.
New in the box RS Regulate 302M rear-biased lower mount with AKML upper mount for AK47/74’s. The upper is compatible with Aimpoint micro red dots and Primary Arms micros. Tough to find and often out of stock. $160 FTF or shipped on buyers dime. Will also trade for 45 ACP ammo.
Rs Regulate Ak-312m & AKML. Basically new I’ve only mounted both are safe queens . Came off my sam7k .
Upper mount was made to mount the following below
For Aimpoint Micro pattern optics
Well I had a deal ready to go and it's fallen through so...
Back to the drawing board.
Looking for a RS Regulate mount. Have items for trade including:
a Colt original M4 barrel (14.5")
Grey Magpul MS3 sling
Rifle soft case/bag with 5 mag pouches
180+ rounds of 5.56 green tip American Eagle...
Looking to get into mounting an optic on my AK. Looking for a RS regulate mount. I understand it's probably going to be hard to find used because people aren't selling them since they work so well but thought maybe I'd catch someone moving to an Ultimak or Sabrewerks.
I've got items for trade...
Looking to trade a once mounted m1-b ultimak upper, and also a only inserted 9396 polytech 75rnd Chinese drum. Drum only has storage wear as with the ultimak. Looking for a rs regulate 301-303 with micro dot upper and cheap micro dot(primary arms etc) plus cash. Or straight trade all for a mro...
Looking to trade a only inserted 9396 polytech 75rnd Chinese drum. Thing is in 9/10 condition. 9 being from storage wear. Looking for a rs regulate 301-303 with micro dot upper and cheap micro dot(primary arms etc) for my drum. Akso looking for a G17 gen 3 slide. I will have pics up tomorrow...
Bought new from RS less than 2 weeks ago.. went to mount it. Realised on the 3rd screw I had the wrong mount. RS apparently wont do returns, so take advantage of my mistake!
Comes with all original hardware.
Like new, never fired, slight locktite/screw wear.