Real-Life Inspiration, The M40 Sniper Rifle

The M40 is an iconic sniper rifle developed and used by the United States Marine Corps (USMC). Its history dates back to the 1960s during the Vietnam War, when it was introduced as a modified hunting rifle, the Remington Model 700. The M40 was designed as an accurate and reliable sniper weapon capable of operating in the harsh conditions of tropical climates.

Over time, the M40 underwent several upgrades, including the M40A3 and M40A5 with Surefire muzzle brake. Both variants feature improvements such as more durable stocks with adjustable cheek rests and enhanced ergonomics. Each iteration was adapted to meet the modern demands of combat operations.

The M40 is renowned for its rugged design, ease of maintenance, and ability to hit long-range targets with high precision, making it a crucial tool for American snipers for more than half a century.

Specna Arms M40A3 (SA-S02 CORE™) Sniper Rifle

The M40A3 sniper rifle replica by Specna Arms is an ideal choice for both beginner and experienced airsoft players. Its affordable price, quality materials, and excellent performance out of the box offer a perfect balance between reliability and functionality.

The rifle is equipped with a simple manual bolt-action mechanism requiring cocking before each shot. The body of the gun is made of reinforced Ncore polymer, ensuring high durability.

Metal components include the barrel, hop-up chamber, trigger mechanism and bolt handle, while the stock and magazine are made of durable polymer. The stock features an adjustable cheek rest and a rubber butt pad for comfortable length adjustment.

Thanks to the RIS rails on the rifle, it is easy to attach a scope or bipod. The hop-up system is easily accessible directly on the body of the gun and allows quick adjustment of BB spin for maximum range without tools, which is essential for accurate shots.

Another important feature is the compatibility with internal components of the TM standard VSR-10, offering nearly unlimited upgrade options, such as installing a CNC trigger mechanism, CNC lightweight piston and its sear, and a stronger spring with a matching spring guide. The cylinder head, magazine and hop-up chamber are not compatiable but feature a metal design with excellent quality, along with the mentioned quick hop-up adjustment. The inner barrel and hop-up rubber are VSR / GBB type.

Variants of the M40A3 (SA-S02 CORE™) Rifle by Specna Arms

Basic - sniper rifle with 3 magazines, without scope and bipod.

Basic with Accessories - rifle equipped with a scope and bipod, ready for action.

High Velocity - rifle with upgraded internal parts (aluminum piston, steel trigger mechanism, CNC spring guide, and stronger spring) offering a performance of 150 m/s (2.3 J).

High Velocity with Accessories - rifle with the above-mentioned upgraded internal parts offering a performance of 150 m/s (2.3 J), equipped with a scope and foldable bipod.

Key Features

M40A3 replica inspired by the real sniper rifle in USMC service.

Simple bolt-action mechanism for reliability regardless of weather or season.

Reinforced Ncore polymer and metal construction.

Adjustable cheek rest and rubber butt pad on the stock.

RIS rails for optics and accessories.

Easily accessible hop-up lever on the rifle body.

Compatibility with VSR-10 parts for performance upgrades.

Matte finish and Nano Coating against scratches.

Laser-engraved Specna Arms logo.

Technical Specifications

Energy: 1.65 J (±128 m/s with 0.20g BBs)

Recommended BB weight: 0.32 - 0.36 g

Magazine capacity: 20 BBs

Length: 1135 mm

Weight: 2.815 kg

Inner barrel length: 485 mm

Material: Metal, polymer

Firing mode: Manual bolt-action

Hop-up: Yes, adjustable

Compatibility: VSR-10 (except chamber, cylinder head, and magazines)

Package Contents

M40A3 Sniper Rifle (SA-S02 CORE™)

3x SA M40 mid-cap magazines

Riflescope 3-9x40 mm with RIS mounting rings

Harris type folding bipod

Set of hex wrenches for maintenance

User manual