Nemo Arms OMENNMS8 Omen Nitemare 300 WIN 8"
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Nemo Arms
Overview
The Nemo Arms Omen Nitemare is a .300 Winchester Magnum semi-automatic built on Nemo's oversized Omen receiver, here with an 8 inch barrel. The Omen is one of the few gas guns that runs a full magnum cartridge.
Specifications
MPNOMENNMS8
PlatformAR-15
Gas System LengthPistol
Thread Pitch5/8x24
Caliber300 Blackout
Action TypeSemi-Auto
Twist Rate1:7
ColorBlack
Barrel Length8.0
Price and stock
The Nemo Arms OMENNMS8 Omen Nitemare 300 WIN 8" was out of stock everywhere we track for all of September 2026, and today both retailers we track have it in stock. Buying today, the lowest price is $4,655 at Classic Firearms, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
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