M4 RIFLE for Sale
Browse m4 rifle listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The M4 rifle originated as a compact derivative of the M16, designed by Colt in the early 1990s for enhanced maneuverability. Its design focuses on versatility and modularity for diverse combat roles. Today, it remains a standard issue carbine for U.S. military forces and many allied units worldwide.
Why It's a Top Choice
- Highly reliable under harsh conditions
- Modular platform for accessories and optics
- Lightweight and compact for close quarters
- Proven accuracy with 5.56mm NATO round
- Wide aftermarket support for customization
Key Variants
M4A1
Enhanced full-auto select-fire version favored by special operations for rapid tactical engagement.
M4 Commando
Shorter barrel variant optimized for tight spaces and urban operations.
M4 Carbine
Standard infantry rifle balancing range and mobility.
Competitor Comparison Table
| Feature | M4 Rifle | Hk416 | Fn Scar |
|---|---|---|---|
| MSRP | $700–$1,000+ | $2,500–$3,000+ | $2,000–$3,000+ |
| Capacity / Size | 30-round magazines, 14.5\" barrel | 30-round mags, 14.5\" barrel | 20 or 30-round, 16.25\" barrel |
| Weight | 6.5 lbs empty | 7.9 lbs empty | 7.9 lbs empty |
| Optics-Ready | Yes, flat top rail | Yes, integrated rail | Yes, modular rails |
| Trigger Type | Standard military trigger | Enhanced match trigger | Two-stage trigger |
| Notable Pro | Widely adopted, proven platform | Improved reliability in adverse conditions | Modular and ambidextrous controls |
| Notable Con | Requires regular maintenance | Higher cost | Heavier than M4 |
Best Use Cases
- Military and law enforcement duty
- Close quarters combat and urban warfare
- Range training and marksmanship
- Home defense
- Tactical competition shooting
FAQs
Can I customize the M4 rifle for optics?
Yes, the M4 features a flat top upper receiver with a Picatinny rail, supporting various optics and sighting systems.
What is the standard caliber of the M4 rifle?
The M4 rifle is chambered in 5.56x45mm NATO, standard for U.S. military assault rifles since the 1990s.
How does the M4 compare in weight to the HK416?
The M4 weighs approximately 6.5 pounds empty, while the HK416 is heavier at about 7.9 pounds empty due to its piston-driven system.
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