M4 CARBINE for Sale
Browse M4 Carbine listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The M4 Carbine was developed in the early 1990s as a compact derivative of the M16 rifle for close quarters and rapid deployment. It combines lightweight design with modularity to suit diverse combat scenarios. Today, the M4 remains a primary service rifle for U.S. military and law enforcement worldwide.
Why It's a Top Choice
- Highly reliable under harsh conditions
- Modular with extensive accessory compatibility
- Lightweight and easy to maneuver
- Proven by decades of military use
- Wide aftermarket parts support
Key Variants
M4A1
Select-fire variant favored by special operations for full-auto capability and durability.
M4
Standard issue carbines for many U.S. forces prioritizing semi-auto and burst fire modes.
M4 SOPMOD
Special Operations variant with enhanced optics, suppressors, and accessories for versatility.
Competitor Comparison Table
| Feature | M4 Carbine | HK416 | FN SCAR |
|---|---|---|---|
| MSRP | $700 - $1200 | $2800 - $3500 | $3000 - $4000 |
| Capacity/Size | 30-round, 14.5\" barrel | 30-round, 14.5\" barrel | 20 or 30-round, 16.25\" barrel |
| Weight | 6.4 lbs (2.9 kg) | 7.9 lbs (3.6 kg) | 7.9 lbs (3.6 kg) |
| Optics-Ready | Yes, with Picatinny rail | Yes, integrated rail system | Yes, modular rails |
| Trigger Type | Single-stage, mil-spec | Single-stage, enhanced | Two-stage |
| Notable Pro | Lightweight and widely supported | Gas-piston system reduces fouling | Highly modular caliber options |
| Notable Con | Direct impingement can cause more fouling | Heavier than M4 | More expensive and heavier |
Best Use Cases
- Military and law enforcement duty
- Close quarters battle (CQB)
- Home defense and personal protection
- Range practice and training
- Modular platform for customization
FAQs
Can I use standard M16 magazines with the M4 Carbine?
Yes, the M4 Carbine accepts standard 30-round M16 magazines providing compatibility across platforms.
What is the barrel length of the M4 Carbine?
The standard M4 features a 14.5-inch barrel to balance compactness and effective range.
How does the M4 Carbine operate internally?
It uses a direct impingement gas system cycling the bolt carrier group to chamber rounds.
Prefer nearby results? Toggle to search local listings.
NEW! Palmetto State Armory M4 Carbine 30
$550.00
Colt M4 Carbine Federal Patrol LE6920FBP
$1,628.99
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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.