The Nemo Omen Nitemare 300Win 8 is a purpose-built .300 Win Mag rifle engineered for shooters who demand serious long-range performance without compromise. Built on a billet 7075-T6 and 7076-T6 aluminum receiver set with Tungsten Cerakote finish, this rifle combines precision engineering with the ruggedness required for extended field use. The Nitemare is designed for hunters and precision shooters who need reliable velocity and accuracy at distance, backed by Nemo's reputation for quality and attention to detail in every component.
At 22 inches, the barrel strikes a practical balance—longer than a short-range workhorse but manageable in the field. The 416R stainless steel barrel features a 1:8 twist with 5R rifling, started as a Bartlein blank for superior accuracy. Nemo's 4-position adjustable gas system runs suppressed or unsuppressed, giving you flexibility for different hunting and shooting scenarios. The tuned recoil system—featuring a patented carrier design, nickel-boron coating, and a steel-faced buffer—keeps felt recoil manageable and the gun running smooth across varied ammunition.
The controls are built for serious shooters: an ambidextrous safety, side-charging handle with ionbond coating, and a Geissele Super semi-automatic enhanced (SSA-E) two-stage trigger with clean 2.3-pound first and 1.2-pound second breaks. The Magpul PRS adjustable stock and MIAD grip provide comfort and control for long sessions behind the gun. The 15-inch M-LOK rail accepts standard accessories, while the compact dual-chamber titanium muzzle brake (6AL-4V) and extended stainless gas tube round out a rifle that's equally at home on the range or in pursuit of distance game.
Nemo's attention to materials is evident throughout: titanium takedown pins, high-pressure 9310 heat-treated and cryo'd bolt, tool steel extractor, and a 14-round aluminum-follower magazine. This is a rifle for the shooter who understands that quality components and precise engineering translate to reliable, repeatable performance when it matters.
Key Features
- Billet aluminum receiver set (7075-T6 and 7076-T6) with Tungsten Cerakote for durability
- 22-inch 416R stainless steel barrel with 1:8 twist and 5R rifling on Bartlein blank
- 4-position adjustable gas system for suppressed and unsuppressed operation
- Patented recoil reduction carrier with nickel-boron coating for smooth cycling
- Tuned steel-faced buffer system and chrome silicon recoil spring
- Geissele SSA-E two-stage trigger (2.3 lb / 1.2 lb)
- Magpul PRS adjustable stock and MIAD grip for extended shooting comfort
- Ambidextrous safety selector and side-charging handle (ionbond coated)
- Compact dual-chamber titanium muzzle brake (6AL-4V)
- 15-inch M-LOK rail with steel QD mounts and rotation limiters
- Titanium takedown and pivot pins
- High-pressure bolt (9310 heat-treated, cryo'd, shot peened, MPI, nickel-boron coated)
- 14-round aluminum-follower magazine included
Specifications
| Caliber | .300 Winchester Magnum |
| Barrel Length | 22 inches |
| Barrel Material | 416R Stainless Steel |
| Barrel Twist | 1:8 |
| Rifling | 5R |
| Overall Length | 43.5 inches |
| Weight (unloaded) | 11.2 lb |
| Receiver | Billet aluminum (7075-T6, 7076-T6) with Tungsten Cerakote |
| Rail System | 15-inch M-LOK with steel QD mounts |
| Stock | Magpul PRS adjustable |
| Grip | Magpul MIAD |
| Trigger | Geissele SSA-E (2.3 lb / 1.2 lb) |
| Gas System | 4-position adjustable, extended length stainless tube |
| Muzzle Device | Compact dual-chamber brake (6AL-4V titanium) |
| Magazine Capacity | 14 rounds |
| Safety | Ambidextrous selector |
Frequently Asked Questions
What comes with the Nemo Omen Nitemare 300Win 8?
The rifle ships with a 14-round magazine with aluminum follower. The Magpul PRS stock, MIAD grip, and all integrated components are included factory-installed.
Can I run this rifle with a suppressor?
Yes. The 4-position adjustable gas system is tuned for both suppressed and unsuppressed operation, so you can adjust cycling based on your setup.
Who is this rifle best suited for?
The Nitemare is built for long-range hunters and precision rifle shooters who demand reliable performance at distance in .300 Win Mag. The 22-inch barrel balances velocity with field practicality, while the adjustable stock and trigger support extended shooting sessions and precise target work.
What is the trigger pull on this rifle?
The Geissele SSA-E two-stage trigger features a 2.3-pound first stage and 1.2-pound second stage for a clean, predictable break.
