Description
When you want to mount a light, a vertical grip, or a QD sling swivel to your Samson Evolution handguard, you need the sections that were built for it. This 2-inch kit ships as a two-pack of Picatinny rail sections, each with four slots, and they anchor into the grooves along your existing Evolution rail for a mount that stays put. The design uses a steel backing plate that seats into the internal grooves of the handguard, which keeps everything from twisting loose once you torque it down. That's the detail folks who've fought with generic rail sections tend to appreciate most.
Built to Match Your Evolution Handguard
These rails are made for the Samson Evolution Series and RTR Series specifically, so they clock in and sit flush the way a factory-matched part should. You can add or remove a section at any of seven radial positions around the rail, and slide it anywhere along the length of the tube. That gives you a ton of freedom to put your accessories exactly where your hands and gear want them, rather than settling for whatever slot happens to be there.
What the 0 MOA Spec Means Here
The 0 MOA orientation just means these rails mount level, with no built-in cant. For a light, foregrip, or laser out on the forend, that flat plane is exactly what you want so your accessories sit true. The sections are machined to 1913 Picatinny mil-spec, so anything that clamps to a standard Pic rail will drop right on.
Materials and Fit
Each section is cut from 6061 aluminum and finished in a mil-spec black hardcoat anodize, so they hold up to weather and handling and match the look of your Evolution rail. They're light, coming in under an ounce per section, and the mounting screws and backer plates come installed and ready to go. It's a simple, no-drama upgrade that turns a bare stretch of handguard into usable real estate.
Key Specifications
- Manufacturer: Samson
- Model: Evolution Accessory Rail
- Manufacturer Part Number: 040301501
- UPC: 851725003384
- Product Type: Picatinny Rail Section
- Rail Length: 2 inches per section
- Slots Per Section: 4
- MOA: 0 MOA
- Material: 6061 Aluminum
- Finish: Mil-Spec Black Hardcoat Anodized
- Spec: 1913 Picatinny Mil-Spec
- Compatibility: Samson Evolution Series and RTR Series
- Weight: Approx. 0.7 oz per section
- Mounting Hardware: Steel backing plates and 10-32 x 3/8 low head cap screws
- Quantity: 2 rail sections per kit
What’s Included
- Two 2-inch Picatinny rail sections
- Steel backing plates (pre-installed)
- 10-32 x 3/8 low head cap screws (pre-installed)
Frequently Asked Questions
Will the Samson Evolution Accessory Rail fit my handguard?
These sections are designed specifically for the Samson Evolution Series and RTR Series handguards. The steel backing plate seats into the internal grooves of those rails, so they lock in without twisting. They are not made to fit other brands of handguard, so make sure you're running an Evolution or RTR rail before ordering.
How many rails come in this 2-inch kit?
The 2-inch kit includes two rail sections, and each section has four Picatinny slots. That gives you a pair of mounting points you can spread out around your handguard. The mounting screws and backer plates come installed on each section.
Can I move the rails to different positions on the handguard?
Yes, that's the whole idea behind the Evolution system. You can add or remove a section at any of seven radial positions around the rail, and slide it anywhere along the length of the tube. It makes it easy to dial in exactly where your light, grip, or other accessory ends up.
What does 0 MOA mean for these rails?
0 MOA means the rail mounts level with no built-in angle or cant. That's what you want for forend accessories like lights, lasers, and foregrips so they sit flat and true. The sections are machined to 1913 Picatinny mil-spec so any standard Pic-mount accessory will clamp right on.





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