Brand: NEMO Arms
Model: Omen Nitemare
Platform: AR-10
Caliber: .300 Winchester Magnum
Gas System: 48-Position Adjustable Gas System
Barrel Length: 8"
Barrel Description: NEMO / 416R Stainless Steel
Barrel Finish: Black
Capacity: 14rds
Twist Rate: 1:8
Muzzle Device: NEMO Titanium Dual-Chamber Muzzle device
Stock Description: SB Tactical SBA3 brace
Stock Material: Polymer
Grip Description: Magpul MIAD Grip
Grip Material: Polymer
Furniture Finish: Black
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Black
Lower Receiver Material: 7075-T6 Aluminum
Lower Receiver Finish: Black
FCG: TriggerTech Flat Competitive Trigger
Rail Description: 7” Modular Rail
Rail Material: 6061 Aluminum
Rail Finish: Black
Attachment Style: M-LOK
Safety: Ambidextrous
Bolt Carrier Group: Recoil Reduction Bolt Carrier
Charging Handle: Side Charging
OAL: 27"
Weight: 7.3 lbs

Features

The NEMO Arms OMEN Nitemare is a limited-production rifle that pushes the boundaries of the .300 Winchester Magnum platform with an ultra-compact and unconventional design. Built around an 8-inch barrel derived from remnant barrel blanks originally used in the production of 22-inch OMEN Match barrels, this configuration prioritizes extreme compactness in a caliber typically reserved for long-range performance. The result is a unique and highly specialized platform that stands apart from traditional magnum rifle designs.

Despite its intentionally unconventional nature, the OMEN Nitemare retains the core engineering and build quality of the OMEN series, delivering reliable function within a dramatically shortened profile. Produced in limited quantities, this rifle represents a distinctive blend of innovation and experimentation, offering a rare and conversation-worthy option for collectors and enthusiasts seeking something far outside the norm.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Magazines will be removed from firearms when shipping to states with magazine capacity restrictions.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).