The Samson Quick Flip Front Sight Gas Block in extended (A2) height (brand part no. 020003301) is a flip-up front sight built with an oversized push-button spring-deploy action for a fast, positive flip-up under stress. Finished in black hardcoat anodizing, it accepts all aftermarket front sight post replacements with mil-spec dimensions, so a shooter isn’t locked into a single sight post option. Every sight locks solidly in the deployed position, and the extended height is built for a perfect M4 co-witness rather than a lower-height gas block rail. It attaches to any standard 1913 Picatinny rail and ships with a stainless steel clamp for mounting.

Key Specifications

• Built in an extended (A2) height for M4 co-witness.
• Oversized push-button spring-deploy action.
• Accepts all aftermarket front sight posts with mil-spec dimensions.
• Locks solidly in the deployed position.
• Not intended for lower-height gas block rails.
• Attaches to any standard 1913 Picatinny rail.
• Includes a stainless steel clamp for mounting.
• Finished in black hardcoat anodizing.
• Has no elevation adjustment built into the sight itself.

Frequently Asked Questions

Does this achieve a proper M4 co-witness? Yes, the extended height is built for a perfect M4 co-witness.

Can I swap the front sight post? Yes, it accepts all aftermarket front sight post replacements with mil-spec dimensions.

Will this work on a lower-height gas block rail? No, it’s not intended for lower-height gas block rails.

Buy the Samson Quick Flip Extended-Height Front Sight Gas Block

Add a fast, reliable flip-up front sight with true M4 co-witness. Order the Samson Quick Flip sight from our gun sights lineup at our Lubbock, Texas gun shop for fast, direct shipping.