Date: 9/7/2020 15:55
Airgun Hunting is Legal! Check to see what is allowed in your state ⭢ Check It Out!

ASG M40A3 Spring Airsoft Sniper Rifle, Black

4.55 reviews
ASG M40A3 Spring

Roll over image to zoom in

Share your images

30-day limited warranty



List Price $99.95

Add to Cart


Estimate Shipping

Add to Compare
Add to Wish list

ASG M40A3 Spring Airsoft Sniper Rifle

  • Spring-powered
  • Polymer construction stock
  • Magazine capacity 27 rounds
  • Metal barrel
  • Adjustable hop up
  • Picatinny/Weaver accessory & scope rails
  • Adjustable cheek riser
  • Rubberized buttpad
  • Includes stock spacers
  • Includes integrated swivel studs for adding a sling

Keep your airsoft team covered from a distance with the M40A3 McMillan by ASG. First entering service in 2003 for Operation Iraqi Freedom, the M40A3’s action was based on the Remington 700 308 rifle with a fiberglass stock by McMillan. Originally chambered in 7.62x51mm NATO you can now command the high ground with this spring-powered airsoft sniper rifle.

This airsoft sniper features a bolt-action single shot firing mode to fire one of the 27 airsoft BBs loaded in its detachable magazine. As an added bonus, ASG has included a BB speedloader for faster reloading during battle. For the ultimate tactical experience, this M40A3 includes the Picatinny/Weaver optics rail and bipod rail located on the underside of the forend. To assure a comfortable hold, the synthetic stock comes with 2 spaces to extend the length of pull and integrated swivel studs for mounting a sling. It’s adjustable hop-up and 449 fps velocity will come in handy on long distance shots.

If you think you have what it takes to be one of the most important members of your squad, grab the M40A3 and jump into battle right out of the box.

other products by ASG

Max Velocity449 fps
Barrel Length23.2"
Overall Length44.3"
Shot Capacity27
BarrelSmooth bore
Front Sightnone
Rear Sightnone
Suggested forSniper
Hop UpAdjustable
Body TypeRifle
Weight5.12 lbs

other products by ASG

Average Customer Review

4.5 (5 reviews)
4 star2 star1 star

Create an online review and share your thoughts with other customers

5.0 5.0

5.0 5.0

5.0 5.0

By ALLAN from USA on 2020-02-14
See all my reviews
Was this review helpful?
0.00 ratings

Verified Purchase

Things I liked: Looks great, feels great, shoots straight, incredible and consistent accuracy, priced right, smooth mechanical's, Weaver/Picatinny rail(s), lightweight, adjustable stock, smooth trigger, and very quiet, (my PCP sounds like a canon by comparison). This rifle likes .26-.36g BBs the best, and hop up is very effective for adjustments between different BB's.. Plenty of power right out of the box. The package included 3000 .26g BBs, an extra mag and speed loader.

Things I would have changed: This rifle delivers on every dollar spent, for the money I can't think of a thing I would change. If you want more, spend more, but the best value for your money is right here.

What others should know: I bought this solely as a means to discourage large vegetarian mammals from feeding on my plants and garden. The goal was to surprise, and with some minimal pain, discourage unwanted guests into dining elsewhere without causing them any injury. It has worked perfectly. There seems to be very limited options for increasing the rifle's power, but it really isn't needed, (again, you want more - $pend more). As a sniper rifle for battle games, this is an excellent choice that allows one to get into the game on a budget, yet at the same time hang tough with the (IMHO over-priced) expensive guns. The under stock rail is adequate for a tactical flashlight or laser, but not for attaching a heavy-duty steel bi-pod in a simulated combat, run and gun scenario. A lightweight synthetic, clamp-on bi-pod works very well if you really need one.


3.0 3.0

4.0 4.0

4.0 4.0

By John from USA on 2019-07-14
See all my reviews
Was this review helpful?
4.01 rating

Verified Purchase

Things I liked: Price point and styling. Trigger.

Things I would have changed: Be nice if it were a bit heavier.

What others should know: I upgraded it to a 500fps spring because I shoot 32g rounds. It shot flat with 20g out of the box at 150 feet. I like shooting this AG. its accurate and fun. I was surprised at how nice the trigger is. Don't forget to order optics. I put a value UTG golden image scope on it.


5.0 5.0

5.0 5.0

5.0 5.0

By Preston from USA on 2018-07-11
See all my reviews
Was this review helpful?
4.01 rating

Things I liked: Everything! For the price it CANNOT be beat!

Things I would have changed: Nothing

What others should know: Very well made gun for the price


Create an online review and share your thoughts with other customers.   Show Other Reviews

Got a question? Got an answer?
Log in, then enter your text.

  • David from USA asked:

    Is the bolt handle on this gun made of plastic or metal? Thanks.

    Item Description

    ASG-50132 [PY-4499-8770]

    ASG M40A3 Spring Airsoft Rifle, Black

    Max Velocity449 fps

    Recommended Accessories / Ammo / Services

    Click to select from all accessories, ammo and services recommended by our experts for this model

    Service Plans

    ASG M40A3 Spring
    ASG M40A3 Spring Airsoft Sniper Rifle, Black
    10-for-$10 Test!
    10-for-$10 Test!
    Add to Cart
    2-Year Service Contract
    2-Year Service Contract - only $45.00
    Add to Cart
    1-Year Service Contract
    1-Year Service Contract - only $25.00
    Add to Cart

    Compatible with ASG M40A3 Spring Airsoft Sniper Rifle, Black