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Krytac Full Metal Alpha SDP Airsoft AEG Rifle (Package: Gun Only)

Krytac / KRISS USA810237025307KTAEG-APSDP-BK0163112
4.6 stars, based on 9 reviews
Krytac Full Metal Alpha SDP Airsoft AEG Rifle (Package: Gun Only)
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Red dot optic shown in images not included. All guns will ship with federally mandated orange tip
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Krytac / KRISS USA


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  • Aluminum alloy receivers
  • SPD front assembly
  • Realistic locking bolt and bolt release
  • Integrated MOSFET; 8mm ball bearing bushings; Quick change spring system
  • Ambidextrous fire selector
  • Adjustable rotary hop-up
  • 2 position compact carbine stock

FPS Range: 290-310

Color: Black

The Alpha SDP is a compact, lightweight, full metal AEG that combines the maneuverability of a pistol with the firepower and capacity of a rifle. Based on the AR design, the Alpha SDP features a futuristic aluminum hand guard with a smooth finish for a comfortable grip. The aluminum receivers feature a stamped KRYTAC logo and accept airsoft M4 style magazines. Additional features include an ambidextrous fire selector and a locking bolt that provides easy access to the KRYTAC rotary hop-up system. The KRYTAC rotary hop-up has 15 adjustment settings and a numbered adjustment wheel for a quick reference point to determine how much hop is needed. The battery is stored in the buffer tube of the KRYTAC Compact Carbine stock, which was designed to provide ample room for a wide range of batteries. The external features of the Alpha SDP are engineered for durability and ergonomics, the heart of the performance lies within the gearbox.

Internally, the Alpha SDP features a reinforced 8mm ball bearing gearbox with integrated MOSFET to regulate electronic signals and to protect the trigger contacts. The corners of the gearbox that surround the cylinder feature a smooth radius, as opposed to a 90 angle, to prevent fracture. Also, the gearbox shell features a small window on the left side where lubrication can be applied directly to the gears or piston, this window is also convenient for inspecting the angle of engagement with the gearbox fully assembled.Additional gearbox features include a modular spring guide system that will allow the spring to be changed without completely disassembling the gearbox. The KRYTAC piston is made of a durable, lightweight, polymer and features 4 metal teeth, with the 2nd to last tooth absent. The Cylinder head is padded with an enlarged rubber bumper to optimize the angle of engagement and to absorb energy form the impact of the piston assembly. The material for the gears have been especially formulated to be very strong, Rockwell test figures on the KRYTAC gears are much higher than industry norms. Turning all of the drive train components is the KRYTAC high torque motor, capable of 30,000 revolutions per minute unloaded.

The Alpha SDP provides the familiarity, controls, and firepower from a rifle and also offers the compact package. It is the ideal AEG for high speed engagements in tight and confined spaces.

Parts List

Length: 527mm - 610mm (20.74" - 24.02") (Adjustable)
Weight: 2500g (5.5lbs)
Inner Barrel: 135mm (6.05mm Diameter)
Magazine Capacity: 300rd Hi-Cap M4 magazine. Works with Tokyo Marui, Matrix, G&P and other compatible M4 / M16 Series Airsoft AEG Magazines
Thread Direction: N/A
Gearbox: Ver 2 Full Metal, Fully Upgradeable
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Package Includes: Gun, Magazine, Front and Rear Sights, Manual
Battery: 7.4v 1000mAh Small PEQ Type Li-Po recommended (Battery not included. Wired to the stock with Small Tamiya connector) (NOTE: Battery output rating should not exceed 30 amps)
Hopup: Yes, Adjustable

Manufacturer: Krytac

Things you may need to get started:
    Spare Magazines Stay in the fight longer by bringing more ammo with you.

    BBs High quality precision 6mm BBs recommended; Use 0.20g 0.25g BBs for best results.

    Silicone Oil Basic cleaning and lubrication maintenance help keep your Airsoft AEG in top working order.
Disclaimer: Due to the unique buffer tube size and battery housing, the following are the only batteries that have been verified to be compatible.

About Krytac / KRISS USA

KRYTAC, established in Southern California in 2013, is a cutting-edge product development team of the Switzerland-based firearms manufacturer, KRISS Group.

The KRYTAC team is comprised of highly experienced professionals who have come together for one common goal, to elevate your expectation of performance, value, and service.

9 Customer Reviews

(Write a review)

by Zack D. on 10/30/2020
"This is my first Krytac aeg. I am a big fan of CYMA and G&P, and have been seeing a lot of Krytac aegs on youtube and on the field and wanted to get one for myself .First off, the packaging is great and you do not have to worry about your terrible UPS delivery drivers who drop or toss your package. I have to say, this aeg feels just as good as my G&P aegs, if not better for nearly half the price. The external build quality is solid, with no wobble besides the magazine, and its not much at all. The bolt catch locks back so you can adjust the hop up easily, and also the hop up is rotary like a prowin/zci/maxx etc... Right out of the box without hop adjustment, .25s shoot very accurate and very consistent. The rof is decent on a 7.4, but on an 11.1 its over 20 rps for sure. The trigger response on an 11.1 is great on semi as well, as it can handle an 11.1 respectively since it does have a mosfet pre installed. The magazine it comes with, is a high cap, its decent but I recommend mid caps. I tried some of my G&P high rps mid caps and they do not fit, but it does like Elite Force mid caps. That is my only gripe, but it does not change the 5* this aeg deserves. The different look it has with the handguard is great. Yes you will have to tap into the bottom of it and install a pic rail if you need a front grip, but if feels great without one. Well worth more than the price tag for any package you purchase of the aeg.
by Carl G. on 12/18/2018
"This gun is one of the best I've owned. Cqb, this gun rocks. Mid range, right on target. I've even taken out a few long range. Everyone who tries it is amazed how well it hits and range. Only made a few adjustments to it, like a hevier spring to up the fps, and a motor to handle it.
by Jacob H. on 07/14/2017
"Got this from the Fourth of July Box of Awesomeness and it shoots wonderfully with a 9.6v 1200mAh battery (I don't own a LiPo, so I haven't tested with that yet.) Stock mag feeds well with 6mmProShop .25g BBs, I plan to bring this to a nearby field tomorrow to get some play time in. Also, rotary hop up and locking bolt are major benefits of the Krytac series, big A+ there.

Side note, I personally think this looks much better with a reflex red dot than with a T1 red dot, but that is super subjective.

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