Nemo Arms .300 Wby MagAR Rifle w/ 24" Barrel Black Yellow

The NEMO Arms .300 Wby Mag AR rifle in tiger stripe finish is a purpose-built semi-automatic platform engineered for shooters serious about extended-range accuracy and low-recoil shooting. This isn't a generic piston gun or a converted short-action upper—it's NEMO's proprietary response to the challenge of running magnum rifle cartridges reliably in an AR-pattern rifle, paired with their patented recoil reduction technology to keep the gun controllable even at distance. The 24-inch Proof Research carbon fiber barrel delivers the velocity and precision you need for long-range hunting or precision rifle competition, while the compact dual-chamber muzzle brake and tuned gas system work together to tame what would otherwise be a punishing shooter's experience.

Built from the ground up with serious components, the receiver set is billet 7075-T6 hard-anodized aluminum, and the action houses NEMO's proprietary carrier with their patented recoil reduction design—a feature you won't find elsewhere. The gun ships with a Geissele SSA-E two-stage trigger, MAGPUL PRS adjustable stock for precision shooting, and a 15-inch M-LOK rail system that gives you plenty of real estate for mounting optics and accessories. The 4-position adjustable gas system lets you tune the rifle for both suppressed and unsuppressed fire, and the extended stainless gas tube is built for severe duty conditions. Everything from the bolt to the takedown pins is engineered for reliability: 9310 heat-treated, cryo'd, and shot-peened bolt; titanium through-drilled pins; tool steel extractor with IONBOND coating.

At 10.2 pounds and 45.5 inches overall, this rifle balances shootability with portability. The tiger stripe cerakote finish protects the aluminum and steel surfaces while giving the gun a distinctly professional appearance. Whether you're pushing rounds out past 800 yards or looking for a magnum semi-auto that actually runs clean and predictable, the NEMO Arms .300 Wby Mag rifle is designed for hunters and precision shooters who refuse to compromise on reliability or performance.

Key Features

• NEMO proprietary patented recoil reduction carrier—dramatically lowers felt recoil compared to standard magnum AR rifles
• 24-inch Proof Research carbon fiber barrel with 1:8 twist, chambered in .300 Win Mag for long-range ballistics
• Billet 7075-T6 hard-anodized receivers with tiger stripe finish
• 4-position adjustable gas system for suppressed and unsuppressed configurations
• Geissele SSA-E two-stage trigger (2.3 lb / 1.2 lb breaks) for precision shooting
• MAGPUL PRS adjustable stock and MIAD grip for ergonomic consistency
• 15-inch M-LOK rail with QD mounts for optics and accessories
• NEMO dual-chamber compact muzzle brake with IONBOND heat treatment
• Includes 14-round magazine with aluminum follower
• Ambidextrous safety selector and tool steel side charging handle

Specifications

Frequently Asked Questions

What makes NEMO's recoil reduction system different from other magnum AR rifles?

NEMO uses a proprietary patented recoil reduction carrier design that isn't available on any other platform. Combined with their tuned steel-faced buffer system and optimized gas tuning, the result is significantly lower felt recoil than you'd experience in a standard .300 Win Mag semi-auto, making extended shooting sessions and follow-up shots far more manageable.

Can I shoot this rifle suppressed?

Yes. The rifle features a 4-position adjustable gas system that allows you to tune the action for both suppressed and unsuppressed use. The extended stainless gas tube and severe-duty components are built to handle suppressed fire reliably.

What comes in the box?

The rifle ships complete with a 14-round magazine featuring an aluminum follower, ready to run out of the box. It is fully assembled with the Geissele SSA-E trigger, MAGPUL furniture, and all internal components.

What is the twist rate and why does it matter?

The barrel has a 1:8 twist rate, which is appropriate for .300 Win Mag and will stabilize a wide range of heavy hunting and match-grade projectiles commonly used in that cartridge. The specific twist is optimized for the velocity envelope of this rifle's configuration.