Samson Evolution Series 4 EX 7" free float handguard for AR-15

Samson Evolution Series 4 EX – 7" free-float handguard for AR-15

The Samson Evolution Series 4 EX is a free-float handguard for AR-15 platform firearms, manufactured in the USA by Samson Manufacturing. With a total length of 7" (approx. 17.8 cm) and a 4" top Picatinny rail, it is designed for pistol gas systems and represents a lightweight and robust upgrade for practical shooting, 3-Gun, professional use, and the sport shooter.

The 6061-T6 aluminum tube with MIL-A-8625 Type III Class 2 black anodizing does not touch the barrel, benefiting shot consistency. The defining feature of the Evolution series is its modularity: accessory Picatinny rail sections can be added or removed in any of the 7 positions around the handguard and at any point along the tube, allowing for the mounting of flashlights, grips, and other accessories only where needed, while keeping the profile clean and the weight low. The top MIL-STD 1913 rail forms a continuous line with the upper receiver thanks to the integrated anti-rotation tabs.

Main features

• Free-float handguard for AR-15
• Total length: 7" (approx. 17.8 cm)
• Top Picatinny rail: 4" (approx. 10.2 cm), MIL-STD 1913, continuous with the upper
• Gas system: pistol
• Weight: 7.0 oz (approx. 198 g)
• Inside diameter 1.56" (39.6 mm), outside diameter 1.80" (45.7 mm)
• Material: 6061-T6 aluminum
• Finish: MIL-A-8625 Type III Class 2 black anodizing
• Accessory rails can be positioned in 7 radial positions and along the entire tube
• Integrated anti-rotation tabs
• Internal clearances for most gas piston systems
• Made in New Hampshire, USA

Recommended use

Suitable for AR-15s with a pistol gas system, for 3-Gun competitions, practical shooting, and professional use. It installs on any MIL-SPEC barrel nut via the supplied thermal bushings. Installation requires removing the original handguard and its end cap, as well as the sling swivel and bayonet lug if present; it is not necessary to remove the front sight base.

Package contents

• Samson Evolution Series 4 EX handguard
• Thermal bushings for MIL-SPEC barrel nut
• 2 x 2" Picatinny accessory rail kits
• 1 x 4" Picatinny accessory rail kit
• Mounting wrenches

Not included: barrel nut (compatible with any MIL-SPEC barrel nut).

Platform: AR-15 · Length: 7" · Gas system: pistol · Manufacturer model: Evolution 4-EX