Want to know how much your gun is worth? Click here to try GunsAmericaAi Firearm Evaluation
Quick Look
The M40A5 is a modernized version of the U.S. Marine Corps' M40 sniper rifle series, introduced in 2014. It focuses on enhanced modularity and improved ergonomics for precision marksmanship. The M40A5 remains a respected choice in military and law enforcement sniper applications.
Why It's a Top Choice
- Upgraded chassis enhances durability and handling
- Improved modularity with detachable magazine
- Accurate 7.62x51mm NATO chambering
- Standard issue for USMC marksmen
- Wide aftermarket support for customization
Key Variants
M40A3
Predecessor to the A5 featuring a fixed stock and traditional stock design favored for reliability.
M40A6
Latest generation with enhanced modularity and adjustable features for advanced sniper roles.
Competitor Comparison Table
| Feature | M40A5 | M24 | SR-25 |
|---|---|---|---|
| MSRP | $4,500+ | $5,000+ | $4,000+ |
| Capacity/Size | 5-round detachable magazine | 5-round internal magazine | 10-round detachable magazine |
| Weight | Approx. 15 lbs | Approx. 15 lbs | Approx. 9.3 lbs |
| Optics-Ready | Yes, Picatinny rail | Yes, scope mounts | Yes, full rail system |
| Trigger Type | Single-stage adjustable | Two-stage | Two-stage |
| Notable Pro | Marine Corps standard issue with upgrade focus | Proven Army sniper rifle with long service | Lightweight with high magazine capacity |
| Notable Con | Heavier than some modern sniper rifles | Internal magazine limits reload speed | Less proven in military sniper roles |
Best Use Cases
- Military sniper operations
- Law enforcement precision engagements
- Long-range target shooting
- Designated marksman roles
- Firearms collections and historical interest
FAQs
Can I use M40A5 optics on earlier M40 variants?
Yes, the M40A5 uses a Picatinny rail allowing compatibility with most optics used on earlier M40 models.
What caliber does the M40A5 fire?
The M40A5 is chambered in 7.62x51mm NATO, standard for Marine Corps sniper rifles.
How does the M40A5 improve over the M40A3?
The A5 adds a detachable box magazine, modular stock, and better ergonomics than the fixed-stock A3.
Prefer nearby results? Toggle to search local listings.
No Results Found
Try adjusting your search criteria or browse our categories.
27 years
In business since 1997
3,000,000+
GunsAmerica Users
12,000+
Articles to help you learn
Sign up for our newsletter
We care about the protection of your data. Read our Privacy Policy .
Frequently asked questions
What types of firearms does GunsAmerica offer online?
Whether you're looking for a semi-auto handgun, bolt-action rifle, AK-47, or AR15, shotgun, Revolver, 1911, or antique firearm, GunsAmerica has you covered. Our extensive classified listings include top models from leading brands, ensuring you find the best firearm online.
Are there any restrictions to buying legal firearms from GunsAmerica?
When buying legal firearms from GunsAmerica, you are subject to state, federal, and local laws. Certain firearm types, such as Class 3/NFA firearms, may require additional documentation and clearance. Before purchasing, comply with all local, state, and federal requirements.
What are some of the best firearm companies available at GunsAmerica?
At GunsAmerica, we take pride in offering a wide range of top-notch firearms from the best companies, including Glock, Sig Sauer, Smith & Wesson, Beretta, Colt, Heckler & Koch (H&K), Ruger, Springfield Armory, Browning, FN (Fabrique Nationale), CZ (CZ-USA), Daniel Defense, Kimber, Walther, Tikka, Weatherby, Barrett Firearms, Wilson Combat, Christensen Arms, Benelli, and many more.
Can I sell my firearm to GunsAmerica?
If you are looking for the best place to sell firearms, GunsAmerica is your top choice. GunsAmerica is a marketplace where collectors, dealers, and private individuals can list and sell firearms. All you have to do is create an account and list your firearm. After the sale, the buyer is responsible for sending the firearm to their preferred FFL dealer so that the transfer can be legally completed safely and lawfully. GunsAmerica does not buy guns or sell guns directly, as we are a marketplace.
How does GunsAmerica handle firearm shipping and transfers?
All firearms bought on GunsAmerica must be sent to an authorized FFL dealer, and each seller on GunsAmerica will provide shipping information to the buyer to ensure a smooth, successful transaction. However, non-firearm items such as holsters, magazines, optics, and ammo in most cases (some state and local laws may prohibit), can be sent straight to your door. Before purchasing a firearm, communicate with an FFL in your area to advise you on shipping and transferring your firearm.
Who We Are
About
From the latest advancements in firearm technology to trusted essentials, GunsAmerica offers a comprehensive selection of gun accessories designed to enhance performance, reliability, and safety. Whether you need precision optics, durable stocks, high-capacity magazines, suppressors, or muzzle devices, our marketplace provides everything required to maintain, upgrade, and customize your firearms. We feature products from leading manufacturers, ensuring superior quality and compatibility across all firearm platforms. Our extensive inventory is built to support every shooter’s needs, from tactical applications and competitive shooting to hunting and everyday carry. At GunsAmerica, we are committed to delivering a seamless, secure shopping experience with competitive pricing, making it easier than ever to find the right accessories to optimize your firearms for any mission or environment.