Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG

Specna Arms
Code: SPE-01-043259-00
£184.99
  • High density polymer build
  • 6.03mm Tightbore inner barrel
  • HAL™ MOSFET/ETU pre-installed

If you're after an AK but you want to deck it out with accessories, the Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG should be right up your street! Equipped with an M-LOK handguard, 20mm Picatinny-railed gas tube, a Russian AK-style side rail and a threaded outer barrel, this lightweight AK SBR is ready for whichever accessories are required to complete the mission!

Inside, the SA-J82 is equipped with Specna's CORE™ Gen.2 internals, including 16:1 ratio high speed gears for a rate of fire boost, a polymer piston with a full steel tooth rack, a CNC aluminium air nozzle and the Magnus™ rotary TDC HOP-up unit. The Magnus™, combined with the Helium flat HOP-up bucking and 6.03mm tightbore inner barrel, gives this compact beast far more potential at long range than the enemy team will expect!

Made predominantly from high-density polymer with an alloy outer barrel, stamped steel top cover and a mix of steel and alloy parts, this CORE™ build has the heft to know it's there without being overburdening for younger skirmishers with less physical strength. If you need an agile AK with plenty of built-in accessory options, the Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG should be in your sights!

Full description

Description

If you love AKs but demand mission-ready externals, the Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG is one to watch. Made predominantly from high-density polymer with an alloy outer barrel, steel top cover and metallic trim parts, this AK is dressed to impress with an M-LOK handguard, a 20mm Picatinny-railed gas tube and an M4/AR-15 buffer tube, making it the ideal AK to customise with accessories.

Internally, this CORE™ Gen.2 build has some impressive pre-upgraded parts for a platform in this price range, including a CNC aluminium air nozzle, 16:1 ratio high-speed gears, a polymer piston with a full steel tooth rack and the Magnus TDC rotary HOP-up unit paired with a Helium flat HOP bucking and 6.03mm Tightbore inner barrel. Make no mistake, the SA-J82 brings some serious heat downrange, perfect for a beginner seeking AK aesthetics with Western modularity or experienced skirmishers looking for an "easy mode" AK build!

Starting at the tip of the 9.5-inch alloy outer barrel, we can find an alloy SLR-style muzzle brake, pairing well with the modernised SLR-style furniture. The muzzle brake mounts to 14mm CCW male threading, making it compatible with most tracer units and suppressors for 14mm CCW threading.

The alloy front sight of the SA-J82 mounts directly to its outer barrel and provides an adjustable front post with protective wings to ensure an accidental bump or scrape does not render your sights useless. As part of the classic AK aesthetic, we can find a dummy cleaning rod running parallel to the outer barrel, stored on the weapon to give the Russian soldier less to remember! This cleaning rod is constructed from steel and isn't intended for cleaning an Airsoft barrel, though it is a big part of what makes the iconic AK silhouette so recognisable.

Moving further down the outer barrel, we come to the dummy gas block, which is constructed from alloy with a convincing gun metal finish applied. This connects to the 20mm Picatinny-railed gas tube, a modernised SLR-style design based on the real steel "UltimAK" gas tube concept, often seen on AK rifles used by Private Military Contractors (PMCs). This is the perfect spot to mount a tactical flashlight, laser or forward-mounted red dot sight, saving you space on the handguard and providing a slick, snag-free profile.

Below the gas tube, we come to the handguard, an M-LOK/20mm Picatinny hybrid design boasting 20mm Picatinny rails at the very front and M-LOK slots behind at the 3, 6, and 9 o'clock positions. This means you have access to the most common accessories available for Airsoft, allowing you to combine 20mm Picatinny flashlights and laser units with M-LOK grips, bipods and rail covers. Recessed inside the 20mm rails, we are also treated to QD sling sockets, allowing you to run the most modern sling systems with the SA-J82. This handguard is styled after real steel SLR handguards and is a big part of the cutting-edge look of this modernised AK.

Next up, we reach the trunnion block, which provides the mounting point for the classic AK tangent rear iron sight. The rear sight is an open design which provides multiple graduations for adjustment and a fine rear sight notch to align with the front sight post. The sight can be adjusted by pressing the buttons on either side of the sight drum and moving the drum back and forth on its base. The lever on the right side is the handguard disassembly lever, and as with all AK AEGs using the VFC external design, this can be rotated upwards by 90 degrees to release the upper handguard and gas tube.

Next up, we find the receiver, which is constructed from high-density polymer to keep the build lightweight and agile. The receiver has standard AK-style controls on the right side, with a fire selector lever which doubles as a dust cover when in safe mode, and a charging handle attached to an authentic black dummy bolt carrier.

Matching the control layout of the real AK rifle, the first position on the fire selector is fully automatic, and the lowermost position is semi-automatic. Each fire mode is denoted by a crisply engraved, authentic Russian Cyrillic marking, adding some realism to this already very realistic AK. Over on the left side, we can find an AK quick-detach dovetail mounting rail, allowing for authentic Russian AK scopes to be mounted, or Picatinny rail mounts if you prefer a more modern Western optic. As with other AK side rails, this side rail is NOT compatible with the SVD side rail mounts and only works with AK side rail mounts.

The receiver also features several mock rivets in all the right places, as well as the receiver strengthening dimples present on all Russian stamped AK receivers. The top cover is also stamped from steel and has all the correct reinforcement ribs to mimic the real AK-74 family. The SA-J82, like other Specna AKs, should definitely please the stitch counters!

To access the Magnus™ adjustable HOP-up unit of the SA-J82, simply hold the charging handle to the rear to reveal this new rotary adjustable HOP-up unit design. The HOP-up allows you to tune the SA-J82 for different ammo weights, seeking the flattest possible trajectory. The Magnus™ design shows a lot of promise, being a TDC design which applies pressure directly to the top of the bucking to minimise side-to-side shot deviation. The Helium™ HOP-up bucking also has the capability to lift heavy BBs, should the mission require it.

Being a top-wired design, the battery compartment of the SA-J82 is beneath the top cover. To access the battery compartment, simply press the button at the rear of the top cover, and it should come straight off, revealing the Deans battery connector. We recommend a 7.4V 1300mAh LiPo battery in AK stick configuration, but you can just about squeeze in certain stick batteries designed for AR buffer tubes if you are very careful when reinstalling the top cover. With the battery connected and installed, you can place the top cover back on, align the button with the hole in the rear of the top cover, and pull the charging handle to lock the cover down if necessary.

The pistol grip is a standard AKM/AK-74 type pistol grip, with diamond checkering on either side to ensure the SA-J82 stays firmly in your grasp in any weather conditions. The trigger guard and magazine release can be found just ahead of the pistol grip, and are constructed from steel to provide solid magazine locking and ample rigidity. The magazine release is placed in the centre of the receiver and is accessible from either side of the AEG, perfect for left or right-handed shooters. The magazine retention system of the AK platform is a "rock and lock" motion, requiring you to first index the front "hook" on the magazine inside the receiver, then rock the magazine to engage the catch.

At the rear, we are equipped with a modern stock setup to match the modern front end, replacing the usual fixed or side-folding stock with an M4/AR-15 buffer tube adapter, a 6-position buffer tube and a slimline crane-style stock. This stock adapter appears to be similar to a real steel VLTOR design, offering a pair of QD sling sockets on the stock base, one on either side, ready for QD sling swivels.

The buffer tube follows the stock base and is constructed from aluminium, offering 6 positions of adjustment for the slimline crane stock. Adjusting the stock is as it is with any other M4/AR-15 stock; simply press the adjustment lever on the bottom and slide the stock into your desired position.

The stock mimics the crane style of rifle stock with its ergonomic sloped cheekpiece and rubber butt plate for enhanced grip, but is a slimmer design to reduce snags and the overall bulk of the rifle. The stock also has a pair of sling slots in the toe, allowing for traditional strap slings to be mounted, and QD sockets on either side, which we can confirm are functional. While it may upset a few purists, this M4-style stock setup suits the SA-J82 well and offers improved comfort and plenty of aftermarket stock options as a bonus!

Inside, this CORE™ Gen.2 platform keeps the best from the previous CORE™ line, adding the Magnus™ TDC Rotary HOP-up chamber and 16:1 ratio high-speed gears to the proven formula. This boosts the rate of fire and long-range performance considerably, giving you a build which is closer to a PRIME™ than the original CORE™.

Also inside is a 6.03mm tightbore inner barrel, the perfect pairing for the Magnus™ HOP-up unit to enhance accuracy and range. The HAL adds a whole lot of functionality into the mix, with programmable fire controls, 6 levels of pre-cocking adjustment and 5 levels of trigger sensitivity adjustment. Available fire modes include 3 or 5-round burst, binary trigger, AUG mode, aka two-stage trigger, semi-auto only and sniper delay, giving you loads of options for how you use your primary. Features like these are usually only present in high-end replicas; we simply cannot believe the wealth of functionality inside this beast, especially considering the price!

If you're looking for a modern AK build packed with potent internals at a remarkable price, the Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG is a slick option! Mission-ready with M-LOK slots, 20mm Picatinny rails and a threaded outer barrel, this AK blends modern modularity with cold, utilitarian AK aesthetics!

Features

  • High-density polymer construction - Alloy barrel & Steel top cover
  • 6.03mm Tightbore inner barrel - Great accuracy potential
  • HAL ETU/MOSFET Pre-installed - Programmable fire modes
  • 14mm CCW Male threaded barrel - Compatible with tracer units and suppressors for 14mm CCW
  • 20mm Picatinny-railed gas tube cover - Ideal for a tactical flashlight or laser
  • M-LOK/20mm Picatinny hybrid handguard - SLR-style, M-LOK at 3, 6 & 9 o'clock, 20mm rails at the front
  • Quick change spring system - Easy power tuning, no need to open the gearbox
  • Ambidextrous magazine release - Centrally positioned, great for lefties
  • Open iron sights - AKS-74U-style, two apertures for aiming, adjustable front sight post
  • Hinged AKS-74U top cover - Easy access for battery changes
  • Magnus™ Rotary HOP-up unit - A new design, finer adjustment increments & better setting retention
  • Textured pistol grip - Appropriate for modern AK variants, textured panels for optimal traction
  • Russian AK dovetail side mount - Compatible with Russian AK optics or 20mm rail adapters
  • Realistic disassembly - VFC style, all pins and rivets, no screws!
  • Front and rear QD sling points - Ready for QD sling swivels
  • 6-Position M4/AR-15 Buffer tube - Adjust the stock to suit your body type & loadout
  • B5-Style Slimline Crane stock pre-installed - Grippy rubber butt plate, QD sling sockets on each side
  • HAL Programmable MOSFET/ETU functions
    • 3 or 5-round burst
    • Binary trigger
    • Semi-auto only
    • Sniper delay
    • Two-stage trigger (AUG mode)
    • Active braking
    • Low-voltage alarm
  • Need to program your HAL ETU? Check this out: HAL Programming instructions
  • Version 3 Gearbox:
    • Aluminium Nozzle
    • 16:1 CNC Steel gears
    • Polymer piston with full steel tooth rack
    • Aluminium cylinder
    • HAL Programmable MOSFET
  • Compatible with AK side rail scope mounts: M-ETAL 20mm Scope Mount For AK | CYMA AK Side Scope Mount
  • Compatible with AK-47/74 AEG magazines

Package Includes

  • Specna Arms SA-J82 CORE™ Gen.2 AK-74 Tactical SBR AEG
    • 125rnd S-MAG AK Medium capacity magazine x 2

Specification

Battery Included
Battery Included
No

General

Weapon Construction External
Platform Type
Assault Rifle
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
Screwdriver Icon
Prebuilt
Yes
Package
Included Items
Magazine x 2
Skill Level Icon
Skill Level
Regular Player
Patrol Base - Warning Icon
Warnings
Li-Po
Li-Po - Never Leave Charging Unattended
Li-Po - Only Use Approved Chargers
Li-Po - Charge in a Fire Safe Area

Testing

FPS Icon
FPS, using 0.20g BBs
Approx.310fps ± 10%, using 0.20g BBs
Testing Notes
Tested using 0.20g Delta Armory Diamond BBs

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx.2.725KG
Weapon Length Collapsed
Length
74cm
Weapon Length Extended
Length (Extended)
82.5cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Steel top cover, trigger guard/mag release & fire selector. High density polymer pistol grip, stock & receiver. Alloy outer barrel, flash hider, buffer tube, front sight, trunnion block & trim parts.

Weapon Specific

Power Source Icon
Powered By
Electric
Blowback Icon
Blowback Type
None
Platform
Platform
AK
Magazine Style Icon
Magazine Compatibility
AK-47/74 AEG Magazines
Fire Select Icon
Fire modes
PatrolBase | Fire Select Safe
Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Programmable
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Platform Configuration
Standard
Weapon Scale Icon
Platform Scale
1:1
Suggested BB Weight
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Adjuster Icon
HOP-Up Adjuster Type
Rotary
Hop-Up Unit Location Icon
HOP-Up Adjustment Location
Inside the ejection port, accessible with the charging handle pulled and held back.

Furniture

Weapon Furniture Icon
Furniture
  • Ambidextrous Magazine Release
  • AR Buffer Tube
  • Sliding Stock
  • Open Iron Sights
  • 20mm Railed Gas Block/Tube
  • Threaded Outer Barrel
  • QD Sling Point
  • Muzzle Brake
  • sling points front and rear
  • Flat trigger
  • Russian AK style side rail mount
  • M-LOK Handguard
  • AK Hinged top cover
Rail System Icon
Rail System
20mm RIS / RAS, M-LOK, Russian AK Side Rail, 20mm Picatinny railed gas tube,
Icon Stock Positions
Stock Type
Sliding, Multi-Position,
Weapon Length Extended
Stock Positions
6
Sight Type Icon
Sight Type
Open Iron Sight
Sling Plate Icon
Sling Options
Stock, Handguard, QD,

Barrel

Outer Barrel Length (in)
8''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
Inner Barrel Diameter
6.03mm
Inner Barrel Length
Inner Barrel Length
280mm

Magazine Specific

Magazine Type
Magazine Type
AEG, Medium Capacity,
Magazine BB Capacity
Magazine BB Capacity
Approx. 125 Rounds

Electric Gun Specific Information

Gearbox
Gearbox Icon
Gearbox Version
V3 Gearbox
Wiring Icon
Gearbox Wiring
Top Wired
Spring Change Icon
Gearbox Quick Change Spring
Yes
Digital Trigger Icon
Gearbox Electronic Trigger
Yes
Motor
Airsoft Motor Icon
Motor Type
Standard
Battery Specific
Battery Voltage
Battery Voltage
7.4V
Battery Type
Battery Type
Li-Po
Battery Connector
Battery Connector
Patrol Base | Icon | Deans
Deans
Suggested Battery Configuration
Suggested Battery Configuration
AK Slim Stick Configuration.

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
325 0.98 1.23 1.37 1.47 1.57 1.77 1.96 2.11 2.21 2.45
328 1.00 1.25 1.40 1.50 1.60 1.80 2.00 2.15 2.25 2.50
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
335 1.04 1.30 1.46 1.56 1.67 1.88 2.09 2.24 2.35 2.61
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
345 1.11 1.38 1.55 1.66 1.77 1.99 2.21 2.38 2.49 2.76
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
355 1.17 1.46 1.64 1.76 1.87 2.11 2.34 2.52 2.63 2.93
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90
420 1.64 2.05 2.29 2.46 2.62 2.95 3.28 3.52 3.69 4.10
430 1.72 2.15 2.40 2.58 2.75 3.09 3.44 3.69 3.86 4.29
440 1.80 2.25 2.52 2.70 2.88 3.24 3.60 3.87 4.05 4.50
450 1.88 2.35 2.63 2.82 3.01 3.39 3.76 4.04 4.23 4.70
460 1.97 2.46 2.75 2.95 3.15 3.54 3.93 4.23 4.42 4.91
470 2.05 2.57 2.87 3.08 3.28 3.69 4.10 4.41 4.62 5.13
480 2.14 2.68 3.00 3.21 3.42 3.85 4.28 4.60 4.82 5.35
490 2.23 2.79 3.12 3.35 3.57 4.02 4.46 4.80 5.02 5.58
500 2.32 2.90 3.25 3.48 3.72 4.18 4.65 4.99 5.23 5.81
510 2.42 3.02 3.38 3.62 3.87 4.35 4.83 5.20 5.44 6.04