Switching out the handguard on your FN 15 Carbine can help shed weight, better heat dissipation, or even improve accuracy on free float rail system.
Disclosure: All products have affiliate links for earning commission to support the website when you purchase
Common Problems with Standard Handguards
Stock handguards often come up short in customization and comfort.
- Limited Customization: Standard options usually restrict how you can accessorize your firearm.
- Weight: Some original handguards are on the heavier side, making your FN 15 tough to handle over time.
- Heat Management: After multiple shots, handguards can get hot, affecting grip comfort.
- Ergonomics: Some users find the stock version uncomfortable, leading to quicker fatigue.
- Accuracy: Non-free-float designs might affect shooting accuracy by putting pressure on the barrel, which affects barrel harmonics.
Test Fit Before You Buy
Free-float handguards make sure there's no pressure on the barrel, which can help improve accuracy, especially if tight groupings are important to you.
Recommended Free-Float M-LOK Handguards
FN 15 Guardian Free-Float Handguard
- Features: 15-inch aluminum build with 24 M-LOK slots
- Advantages: Boosts accuracy and has plenty of room for accessories
- Pricing: Check market for pricing
Midwest Industries AR-15 Combat Rail
- Options: Lengths include 9.3", 10.5", 13.5", and 15"
- Features: Monolithic top rail with anti-rotation QD sling sockets
- Pricing: Check market for pricing
STNGR HWK M-LOK Handguard
- Design: Slim and lightweight
- Benefits: Various lengths and works well with M-LOK accessories
- Pricing: Check market for pricing
Affordable Picks
NBS Free-Float M-LOK Handguard
- Advantages: Budget-friendly and versatile
- Pricing: Check market for pricing
Premium Picks
Geissele Super Modular Rail MK14
- Features: Known for top-notch quality
- Pricing: Check market for pricing
Things to Watch Out For
- Over-Tightening: Avoid over-tightening the barrel nuts to prevent alignment issues. It's smarter to stick to the recommended torque specs.
- Component Compatibility: Ensure the handguard, gas block, and barrel length work well together.
Handy Tips for Installation
When changing to a free-float handguard, a low-profile gas block is mostly needed if it goes over it. Like a 15" rail on a carbine or mid length gas system.
You definitely need a vice clamp to torque the barrel with the barrel nut.