Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU

Specna Arms
Code:
323.49
  • Full metal construction
  • Kestral Basic MOSFET preinstalled
  • Integral suppressor

Attention all sneaky skirmishers! The Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU is exactly what you are looking for, with its integral suppressor, it really doesn't get more covert than this. This platform also boasts full metal construction, making it hardwearing and sure to last in even the roughest of skirmishing conditions.

Inside the Specna Arms SA-A07 ONE™, there are some incredible straight-out-of-the-box internals. It features a Kestrel Basic ETU, 18:1 ratio steel gears running on 8mm ball bearing bushings and a reinforced gearbox shell with an Enter & Convert™ quick change spring guide. This allows you to change the spring without having to open the gearbox itself. Also inside is a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, getting you off the mark with above-average accuracy potential and a slight FPS boost.

Full description

Description

At a glance, this rifle looks like another boring M4-style platform, but you couldn't be further from the truth! If you find the idea of an integrally suppressed rifle appealing, the Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU should be on your wishlist. This AEG is part of the Specna Arms ONE™ series and offers a full metal construction, spacious crane stock, programmable Kestral Basic ETU, functional bolt release and ergonomic pistol grip. The perfect AEG for those who like a realistic feel when they skirmish.

The Kestrel Basic offers programmable fire modes including 3 round burst and binary trigger, adjustable pre-cocking with 6 levels to choose from and several quality-of-life functions such as low battery warning and cycle completion. When pre-cocking is set, the rifle has a remarkably snappy trigger response, perfect for CQB sites!

Starting at the front end of this platform we find a preinstalled suppressor which covers the 300mm 6.03mm tightbore inner barrel, mounting to the 5-inch alloy outer barrel. This gives the SA-A07 the look of an integrally suppressed AR with a compact front end making it easy to take corners in CQB. The suppressor mounts to 14mm CCW male threading but due to the inner barrel length, a barrel extension will be required to mount a tracer unit.

Surrounding the suppressor we have an alloy 20mm Picatinny quad-railed handguard with 20mm rails at the 3, 6, 9 and 12 o'clock positions, ready for any 20mm accessories you choose to add to complete your mission. Styled after the real steel KAC RIS, the handguard has a realistic look and unlike similar integrally suppressed platforms with KeyMod or M-LOK handguards, you will never have trouble mounting mission essentials to the quad rail of this AEG as it doesn't require clearance between the handguard and suppressor.

As it comes, the SA-A07 is equipped with a set of alloy flip-up aperture iron sights pre-installed on this rail, which have adjustable elevation. These sights can either serve as primary sights if you're old-fashioned or keep you in the fight if your red dot malfunctions mid-skirmish.

Next, we come to the receiver, this is a familiar format for anyone who has handled an M4/AR-15 platform before, constructed from alloy and matching the real M16A4/M4A1 receiver style perfectly. This includes the reinforced front pinhole, mil-spec flat trigger guard, magazine release fence and low profile charging handle latch. The magazine release is on the right side of the magazine well with a push-through design just like a standard M4/AR-15 AEG, it features a textured surface for optimal traction in speedy reloads.

The fire selector switch is found above the pistol grip on the right side, offering 3 modes of fire with a 90-degree throw between each. The default fire modes are safe, semi-auto and full auto but with the pre-installed Kestrel Basic ETU, you can interchange between binary trigger instead of semi and 3-round burst instead of full auto.

The charging handle can be found at the top rear of the receiver and features a low-profile charging handle latch to reduce snagging potential. Pulling the charging handle back will open the dust cover and retract the chrome-finished mock bolt, revealing the rotary HOP-up unit on the right side. The HOP-up allows you to adjust the amount of backspin applied to your projectiles and tune the SA-A07 for different ammo weights, looking for the flattest possible trajectory. When you've completed your Hop-up adjustments, you can press the bolt release catch located in the centre of the left-hand of the receiver to slide the mock bolt back over the HOP-up unit with a satisfying metal-on-metal "clank".

At the rear of the receiver, we are treated to an ambidextrous sling plate constructed from steel, providing ample strength to support the SA-A07 ONE™ on a single-point sling. This sling point can also be paired with a front sling point (available separately) if you prefer a two-point sling setup for better stability when moving with the rifle stowed. Following the sling plate, we come to the good old AR buffer tube, constructed from alloy and offering 6 positions of stock adjustment for the pre-installed crane stock which also serves as the battery compartment for the Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU.

You can access the battery compartment either by removing the stock from the buffer tube completely or squeezing the two tabs at the toe of the stock together, after which you can pull the butt plate off, remove the battery plug, and make use of the stock's built-in battery compartment to house a nunchuck/crane-style battery. For the Specna Arms SA-A07 ONE™, we recommend a 7.4V 2600mAh LiPo crane/nunchuck battery to make the most of the spacious crane stock interior.

This Crane stock also includes a pair of QD sling sockets, one on either side, allowing for QD sling swivels to be added for a quick removable sling setup. Conventional sling slots (aka "footman loops") are also present for those who want a two-point sling but prefer the old-fashioned way. The butt plate is also made from grippy rubber, ensuring your MK18 doesn't slip off your shoulder when the adrenaline is high and mistakes can cost you everything. 

Inside the SA-A07 ONE™, we are treated to the same solid internals as the original, including 18:1 ratio steel gears running on 8mm ball bearing bushings and a steel spring guide with Enter & Convert™ quick change spring functionality. Enter & Convert™ requires the gearbox to be removed from the receiver but doesn't require the gearbox itself to be opened, saving you hassle when it comes to power tuning and minimising the expertise needed.

The highlight of this refined version of the original SA-A07 ONE™ is its Kestrel Basic ETU/MOSFET, which offers 6 levels of adjustable pre-cocking, options for 3 round burst and binary trigger along with low battery warning, cycle completion, active braking and low/high voltage cutoff. This means you can crank up the trigger response for super fast double taps or run this AEG with SAFE-SEMI-3RND BURST fire controls. Also present inside is a 6.03mm tightbore inner barrel and rotary HOP-up unit, giving you superb accuracy potential and the latest most reliable HOP-up design for M4/AR-15 platforms.

If covert is your name and staying sneaky is your game, the Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU is the only rifle you should be considering. Its resilient full metal construction, great out-of-the-box performance and the preinstalled programmable Kestral Basic ETU combine harmoniously for an amazing shooting experience and unparalleled performance for other rifles at this price tag! 

Features

  • 6.03mm Tightbore inner barrel - Great accuracy potential 
  • 14mm CCW Male threaded outer barrel - Tracer/suppressor ready, barrel extension may be required
  • Flip-up iron sights pre-installed - Mounted to the top rail, press textured buttons to flip up
  • 20mm Picatinny quad rail handguard - Compatible with 20mm Picatinny accessories 
  • Extended charging handle latch - Easy access to the HOP-up unit for adjustment
  • 20mm Picatinny railed receiver - Ready for a red dot sight or rifle scope
  • Rotary adjustable HOP-up unit - Easy to adjust in fine increments, holds its setting well long-term 
  • 6-Position M4/AR-15 buffer tube - Adjust the stock to suit your body type perfectly
  • Spacious crane stock - Plenty of space for nunchuck batteries
  • "A2" Finger ridged pistol grip - Accurate to the real M16A4, comfortable for most hand sizes
  • Rear wired - Deans battery connector
  • Recommended battery - 7.4V 2600mAh LiPo crane/nunchuck battery
  • Version 2 gearbox:
  • Enter & Convert™ quick change spring system
  • Steel spring guide
  • 8mm Ball bearing bushings
  • 18:1 Ratio steel gear set
  • Kestrel Basic MOSFET/ETU functions:
  • Binary Trigger
  • 3-Round burst
  • Active braking
  • Low/high voltage cutoff
  • Low battery warning
  • Kestrel Basic MOSFET/ETU programming instructions are available here
  • Compatible with M4/AR-15 AEG magazines - Plenty of spares and styles available!

Package Includes

  • Specna Arms SA-A07 ONE™ M4/AR-15 AEG; Kestrel Basic ETU
  • 300rnd High-capacity magazine
  • Specna Arms sticker

Specification

General

Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 300fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Yes
Screwdriver Icon
Pre-Built
Yes
Package
Included Items
  • Magazine
  • Suppressor
Skill Level Icon
User Skill Level
Starter, Regular Player,
Patrol Base - Warning Icon
Warnings
Li-Po - Never Leave Charging Unattended
Li-Po - Only Use Approved Chargers
Li-Po - Charge in a Fire Safe Area

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.37kg
Weapon Length Collapsed
Length (Collapsed)
71cm
Weapon Length Extended
Length (Extended)
80cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Alloy outer barrel, receiver, handguard, suppressor, buffer tube. High density polymer stock and pistol grip. Steel sling plate, screws and pins.
Weapon Construction External
External Construction
Polymer
Alloy
Steel
Gearbox Icon
Internal Construction
Polymer
Alloy
Aluminium
Steel

Weapon Specific

Power Source Icon
Powered By
Electric
Blowback Icon
Blowback
None
Weapon Platform
AR, M4 / AR-15 / M16, Assault Rifle, M4/AR-15 AEG,
Magazine Style Icon
Magazine Style
Long Gun Magazine, Assault Rifle, M4 / AR Platform,
Fire Select Icon
Fire Selector
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 Disconnect
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Standard
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Icon
Hop-Up Unit
Yes
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Rotary
Hop-Up Unit Location Icon
Hop-Up Location
Behind the mock bolt carrier, accessible when the charging handle is pulled and the mock bolt is locked back.

Furniture

Weapon Furniture Icon
Furniture
  • Railed Handguard
  • Suppressor
  • Flip-Up Ironsights
  • AR Buffer Tube
  • Railed Receiver
  • Sliding Stock
  • Ergonomic Pistol Grip
  • QD Sling Point
  • Ambidextrous Sling Plate
  • Electronic Trigger Unit
  • Extended Charging Handle
  • Sling point on stock
  • Aperture iron sights
Rail System Icon
Rail System
20mm RIS / RAS , 20mm Railed Receiver,
Icon Stock Positions
Stock Setting
Sliding , Multi-Position ,
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights , Aperture Iron Sight,
Sling Plate Icon
Sling Options
Buffer Plate , Stock , QD ,

Barrel

Outer Barrel Length (in)
5''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
6.03mm
Inner Barrel Length
300mm

Magazine Specific

Magazine Type
High Capacity, AEG,
Magazine BB Capacity
Approx. 300 Rounds
Magazine BB Fill Method
Fill Window
Magazine BB Fill Location
Top

Electric Gun Specific Information

Gearbox
Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear 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 Connector
Patrol Base | Icon | Deans
Deans
Compatible Battery
Compatible Battery Type
Li-Po
Compatible Battery Configuration
Crane
Compatible Battery Voltage
7.4v

Product Testing Data

Notepad Icon
Test Description
300 FPS +/- 10%
Notepad Icon
Tested Using
0.2g ASG BLASTER
Notepad Icon
Test Date
09/08/2024

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