KNIGHTS ARMAMENT SR-15 for Sale
Browse Knights Armament SR-15 listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The Knights Armament SR-15 traces its origins to Eugene Stoner's advanced rifle designs and was refined by KAC for elite military use. Designed as a highly reliable, accurate, and durable AR-15 platform, it integrates proprietary features with modern enhancements. Today, the SR-15 is considered a premium choice among enthusiasts, law enforcement, and professionals who demand top-tier performance.
Why It's a Top Choice
- Proven reliability in adverse conditions
- Ambidextrous controls with military-grade ergonomics
- Match-grade barrel and bolt for increased accuracy
- Integrated URX handguard for modularity and strength
- Low-maintenance E3 bolt design extends component life
Key Variants
SR-15 E3 Mod 2
This variant features an improved gas system, E3 bolt, and longer URX 4 handguard for tactical use.
SR-15 CQB
Has a shorter barrel for close-quarters operations; ideal for mobility and suppressed setups.
SR-15 IWS
Integrated Weapon System with key ambidextrous upgrades; favors professional use and high functionality.
Competitor Comparison
| Feature | Knights Armament SR-15 | Daniel Defense DDM4 V7 | LMT MARS-L |
|---|---|---|---|
| MSRP | $2,500+ | $1,800+ | $2,300+ |
| Capacity | 30 rounds | 30 rounds | 30 rounds |
| Weight | 7.4 lbs (approx) | 6.8 lbs | 7.0 lbs |
| Optics-ready | Yes | Yes | Yes |
| Trigger type | 2-stage match | Mil-spec single-stage | Mil-spec single-stage |
| Notable pro | Match-grade E3 bolt for durability | Excellent value for premium build | Fully ambidextrous lower |
| Notable con | Higher cost than standard ARs | Heavier than basic AR-15s | Availability can be limited |
Best Use Cases
- Combat and duty use
- Serious competition shooters
- Advanced tactical training
- High-end AR collectors
- Home defense with optic and suppressor setups
FAQs
What is special about the Knights Armament SR-15 bolt system?
It uses the proprietary E3 bolt, offering enhanced strength, longer extractor life, and improved reliability over standard AR-15 bolts.
Can I mount aftermarket parts on an SR-15?
Yes, the SR-15 accepts standard AR-15 accessories, though its URX rail may require specific tools.
How does the SR-15 perform suppressed?
Exceptionally well. Its gas system and barrel design support smooth suppressed operation with minimal overgassing.
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