FAB Defense FXFBS Front Back-Up Sight for AR-15/ M16/ M4 Low Folded Profile Spring-Locked Deployment Black Polymer & Metal

FBS is an advanced, low-profile, durable, auxiliary front sight. It can be used with any rear sight, but has been designed to provide an extreme optical advantage. Its sight pin elevation is easily and quickly adjusted without tools. The FBS is readily mounted on any 1913 Picatinny rail, making it ideal for use on M4/AR-15/M-16 platforms. The sight can be used as a primary or back-up sight and the ergonomic angel-wing-shaped front shroud helps center the image with any rear sight. When used with a matching FAB Defense RBS Rear Back-up Sight, it creates a precise optical tunnel that ensures more accurate aiming and faster target acquisition. The low folded profile is smooth and inconspicuous and will not snag on gear, webbing or brush. The sight is also made of extremely durable high-grade polymer and metal, and has an instant spring-locked deployment mechanism that will not slip, break or deform.

🔥 Your Trusted Online Firearms Store – Shop with Confidence!

Items Marked Online Only Are Not in Stock at Our Retail Location

Looking for the best prices on FAB Defense FXFBS Front Back-Up Sight for AR-15/ M16/ M4 Low Folded Profile Spring-Locked Deployment Black Polymer & Metal by FAB Defense? The Vault proudly serves Kansas City with unbeatable pricing, expert service, and exclusive rewards.

💰Best Prices in Kansas City
🎁 Earn Rewards on Every Purchase.
🔫 Special Bundles & Firearm Packages Available.
🔒 Safe & Secure Checkout – Shop with confidence using trusted payment options.
🚨 Compliance-Ready – All sales follow federal, state, and local firearm laws.

🔥 Limited Stock – Visit Us Today or Shop Online Before They’re Gone! 🔥