Wednesday, September 27, 2023

NEMO Arms Omen Recon .300 Win Mag (.300WM) 18″ Tactical AR Carbine/Rifle with Recoil Reduction System Bolt Carrier Group (RRS BCG), Quick-Detach (QD) Side-Charging Handle and PROOF Research Carbon Fiber Match-Grade Barrel (Video!)

Print Friendly, PDF & Email

By David Crane
david (at) defensereview (dot) com

All photo and video content contained in this article was shot by, and is copyrighted. owns the copyright on all photo and video content. All DR photos and videos were shot with a Sony Cyber-shot RX100 (DSC-RX100/B) Digital Camera with 20.2 MP (20.2-megapixel) still camera and 1080p HD video camera capability.

The following article is property of (DR) and is copyrighted material. If you are reading this article on another website other than, please email us the website address/URL (where the unauthorized DR article reprint is located) at defrev (at) gmail (dot) com. Thank you.

March 18, 2014
Last updated on 3/19/14.

DefenseReview (DR) was REALLY glad to run into the NEMO Arms boys at SHOT Show 2014. Why? Because their guns are BADASS. Those are some seriously baddass blasters they’re makin’ over there. So, what makes them so shit-hot? Where do I start? First, they look really cool. One of the coolest of the bunch is the NEMO Arms Omen Recon .300 Win Mag (.300WM) 18″ Tactical AR Carbine/Rifle, with a collapsed length of 38.25 inches (38.25″) a listed weight of 10 pounds (10 lbs).

The Omen Recon sports custom-cut match-precision-machined 7075-T6 billet upper and lower receivers with NEMO-exclusive Tango Tigerstripe camo (camouflage) coating/finish and texturizing, as well as a QD (Quick-Detach) side charging handle that doubles as a handy takedown pin punch tool. The billet upper receiver connects up with a nice-looking integrated free-float tactical handguards/rail system/forend rail tube via a multi-screw “interlocking feature” that creates a monolithic-type rail system. While not truly monolithic, the end result is roughly the same, with the advantage of being able to swap rail systems as new, better, and/or different rail systems are developed, or your mission profile changes.

On the gun we handled, the rail surrounded and almost completely encompassed an 18-inch (18″) match-grade PROOF Research steel-lined carbon fiber barrel (AR-10) topped off with an effective-looking, and NEMO-exclusive, A-10 Muzzle Brake (Patent Pending) with Nitride finish. The carbon fiber barrel not only gives the shooter .5 MOA accuracy, but it should also lighten the gun up some (in theory), reduce harmonic vibration, enhance durability and heat dissipation, and automatically increase the weapon’s cool factor (although most likely the price, as well).

The NEMO Omen Recon Carbine 18″ looks at first glance like a gas piston/op-rod (push-type operating rod) gun, due to the knob on the front of the NEMO adjustable gas block, but it actually operates via direct gas impingement (DGI), which brings us to the heart of the Omen Recon’s operating system, the Nemo Arms 7.62mm NATO (7.62x51mm NATO)/.308 Win./.300WM Recoil Reduction System bolt carrier group, or NEMO RRS BCG, for short. Sound familiar? It should. Defense Review has been writing about the FERFRANS SOAR SBR’s and DSAS/RRS (Delayed Sear Activation System/Rate Reduction System) BCG at least since 2007, and we’ve even shown comparative video of the DSAS/RRS BCG in action on both full-auto and semi-auto in order to demonstrate its advantages in both fire modes.

However, the Ferfrans DSAS/RRS BCG is springless, slides back and forth in the BCG under its own weight during recoil, and was designed and developed specifically for select-fire/full-auto 5.56mm NATO (5.56x45mm NATO)/.223 Rem. combat/tactical AR SBR’s (Short Barreled Rifles) and carbines, specifically to reduce their cyclic rate of fire (ROF) and felt-recoil impulse.

The NEMO Arms RRS BCG, by contrast, is a sprung system (recoil reduction device), so it’s non-sliding, and it’s specifically designed to reduce the felt recoil impulse of the .300WM cartridge (or 7.62mm/.308 Win. cartridge) in a semi-auto-only marksman’s/sniper-type AR rifle/carbine, thereby enhancing the weapon’s effectiveness during multiple-shot strings against both stationary and moving targets, presumably at long range. The NEMO RRS BCG is also Nickel-Boron (NiB)-coated for permanent/intrinsic lubricity and enhanced corrosion resistance and durability.

Its Geissele SSA-E Super Semi-Automatic Enhanced) 2-Stage Trigger should only assist with that endeaver. Oh, and the Omen Recon .300WM Carbine utilizes in-house-developed and manufactured 14-round mags, so you’ve got plenty of immediate .300WM firepower with which to hit your target. So, they can run, but they’re just gonna’ die tired.

And, that gets to the heart of the NEMO Arms Omen Recon 300 Win Mag Carbine’s purpose, it’s combat-raison d’etre ,if you willl: to neutralize hostiles at distances from 800-1,000 yards with Sierra 175-grain HPBT MatchKing bullets, and most likely even further with specialized high-tech ammo. DR isn’t sure whether or not PNW Arms is making .300 Winchester Magnum ammo yet, but we’d be surprised if their ammo couldn’t enable consistent hits on target out to at least 1,350-1,500 yards with it if/when they do, especially when using a gun like the target=right>NEMO Omen Recon. We’ve been covering their high-end specialized ammo for a couple years, now, and they’ve developed some pretty interesting sniper ammo in 7.62mm NATO (7.62x51mm NATO)/.308 Win. and 5.56mm.

DefenseReview hasn’t yet gotten the opportunity to run the Omen Recon at the range, yet. We intend to remedy that ASAP, however. We’re guessing it shoots like a dream, but the proof will be in the shooting. In the meantime, we hope you enjoy the embedded photos and video we shot at the NEMO booth at SHOT. Clint Walker did a great job of taking us through the NEMO guns AND the RRS BCG, as well as some of the tactical rifle accessories utilized.

Oh, and “NEMO” stands for “New Evolution Military Ordnance”, just in case you were wondering.

The the NEMO Arms Omen Recon Rifle/Carbine sports some additional goodies, including the following:

– (Aforementioned) Quick-Detach (QD) Billet-Machined High-Strength-Steel Side Charging Handle, making the NEMO upper receivers reminiscent of, though significantly different than, the American Spirit Arms (ASA) uppers.
– Nickel-Boron (NiB)-Coated Barrel Extension and Feed Ramp to match the NiB RRS BCG
– Nickel Boron Bolt Release
– Two (2) Detachable Handguard Accessory Rails with Built-in QD mounts
Mission First Tactical MFT Battlink Utility Stock (BUS) MILSPEC Carbine Buttstock
– Two (2) NEMO 14-Round Polymer Magazines
– Custom Drag Bag

Company Contact Info:

3582 Hwy 93 S
Kalispell, Montana 59901
Phone: 406-752-6366 (NEMO)
Email: [email protected]

PROOF Research (Barrels)
Phone: 406-756-9290
Email Contact Page:

Mission First Tactical (MFT)
780 Haunted Lane
Bensalem, PA, 19020
Phone: 267-803-1517
Email: [email protected]

DUNS: 039641090
CAGE: 660G0

FERFRANS Specialties
8920 Vernon Ave., Suite 125
Montclair, CA 91763
Email: [email protected]

Falcon Operations Group Inc. (FOG)
Huntington Beach, CA
Phone: 714-248-6509
Email Contact Page:

Sierra Bullets
1400 West Henry St.
Sedalia, MO 65301
Toll Free: 888-223-3006
Email: [email protected]

PNW Arms
1293 E Freeze Rd.
Potlatch, ID 83855 USA
Toll-Free: 855-768-2767 (855-PNWARMS)
Phone: 208-875-2331
Email: [email protected]

© Copyright 2014 All rights reserved. This material may not be published, broadcast, rewritten or redistributed without receiving permission and providing proper credit and appropriate links.

Related Articles:

Mission First Tactical MFT BATTLELINK Minimalist Stock NEMO Rapid Assault Team (BMS NRAT) Strap Models: Lo-Pro/Lo-Vis Telescoping/Retractable AR-15 Rifle/Carbine/SBR Buttstock with Braided/Woven Paracord Strap (Video!)

Mission First Tactical MFT 30-Round Standard-Capacity 5.56mm/.223 Rem./300 AAC Blackout (300BLK) Polymer Magazine (SCPM556) for Tactical AR-15 and FN SCAR MK 16/16S SCAR-L Rifle/Carbine/SBR’s (Video!)

Mission First Tactical AR-15 Rifle/Carbine/SBR Accessories in Kryptek Camouflage Patterns: Camo MFT BATTLELINK Utility Stock (BUS)/Minimalist Stock (BMS) Series, MFT REACT Vertical Grip Series, MFT TORCH Light/Laser Mount Series, MFT Engage Pistol Grip Series and MFT Rail Systems (Video!)

Desert Tech DT MDR (Micro Dynamic Rifle) Bullpup Carbine 16″and MDR-C (Micro Dynamic Rifle-Compact) 10.5″ Bullpup SBR Prototypes Introduced at SHOT Show 2014 (Video!)

FERFRANS CQB Modular Muzzle Brake System (MMBS) with FF Concussion Reduction Device (CRD) for Semi-Auto-Only and Select-Fire/Full-Auto Tactical AR-15 Carbine/SBR’s (Video!)

Chris Costa of Costa Ludus Hits the “Happy Switch” and Goes Full-Auto with the FERFRANS SOAR-P Select-Fire 5.56mm NATO/.223 Rem. Piston AR SBRs/Sub-Carbines/Carbines (Videos!)

Videos: Controlled One-Handed 30-Round Full-Auto Mag Dump and Short Bursts with 5.56mm NATO Select-Fire FERFRANS SOAR-P Piston AR SBR/PDWs

FERFRANS SOAR-P Upper Receiver Setup with Rate Reduction System/Delayed Sear Activation System (RRS/DSAS) Versus Stock Adams Arms (AA) Tactical Piston AR SBR/Sub-Carbine Upper Receivers Mounted on Colt M4A1 Carbine Select-Fire Lower: Full-Auto/Semi-Auto Range Test on Video!

Falcon Security Group (FSG) Demonstrates FERFRANS HVLAR (High Volume Light Automatic Rifle) Lightweight Mag-Fed Infantry Automatic Rifle (IAR)-Type Piston/Op-Rod AR Carbine: Who needs an FN M249 SAW Belt-Fed Light Machine Gun? (Video!)

Patriot Ordnance Factory POF P308 and P415 (also written P-308 and P-415) Gen-4 Tactical Gas Piston AR Rifle/Carbine/SBR’s with New E2 Extraction (E-Squared Extraction) Chamber that Floats the Fired Case Right Out of the Gun (Video!)

Adams Arms COR (Competition Optic Ready) 16.5″ Ultra Lite AR-15 Upper Receiver/Lightweight Tactical Gas Piston AR Carbine with HiperFire HiperTouch 24C Match Trigger and Diamondhead D-45 (Swing Sights) Integrated Sighting System Flip-Up BUIS for Tactical 3-Gun Competition Shooting (Video!)

Colt SWORD (Sniper Weapon and Observer Reconnaissance Devices) Networked Weapons Targeting System for Netcentric Warfare (Network-Centric Warfare) Demonstrated for DR at SHOT Show 2014 (Video!)

SIG SAUER SIG556xi Modular, Multi-Caliber (5.56mm NATO, 300 AAC Blackout/300BLK, 7.62x39mm Russian) Gas Piston/Op-Rod Combat/Tactical Rifle/Carbine/SBR with Kalashnikov AK-47/AKM Configuration Capability!

PNW Arms Signature Series 300 AAC Blackout (300BLK) Tactical AR-15 Carbine 16″ Mid-Length Upper Receiver and Ammo Combo Deal Available for 300 BLK CONUS Delivery Program Launch!

DSG Technology/PNW Arms Super-Sniper Ammunition (SSA) Enhanced-Range Rifle Ammo Being Made in the USA for Military Special Operations Forces (SOF) Long-Range-Interdiction/Sniping and Close Quarters Battle/Close Quarters Combat (CQB/CQC) Applications: Solid-Copper Super Sniper Tactical (SST) Rounds/Bullets and Tungsten-Tipped Super Sniper Armor-Piercing/Armor-Penatrating (SSAP) AP Rounds/Bullets in All Military NATO Calibers! (Video!)

DSG Technology/PNW Arms Multi-Environment Ammunition (MEA) Solid-Copper General Purpose Supercavitating (GPS) and Tungsten Penetrator-Tipped Dual-Core Supercavitating (DCS) Armor-Piercing/Armor-Penetrating (AP) Rounds/Bullets: Sub-Aqua/Underwater Rifle Ammo Goes into Production in USA (Video!)

PNW Arms Cold Tracer Ammo Coming Soon: Facebook “Likes” Drawing for Free 9mm or .45 ACP Ammo Starts September 1st! (Video!)

Geissele Noveske Memorial Trigger/Hammer Kit: Limited-Edition Geissele Automatics Super Select-Fire (SSF) Tactical AR Trigger/Hammer Kit with John Noveske/Noveske Rifleworks Graphic Being Offered at SHOT Show 2013 (Photos!)

Geissele Super Tricon Trigger: Semi-Straight Tactical AR-15 Carbine/Rifle Trigger Designed by Retired U.S. Navy SEAL Jeff Gonzalez for Tactical Shooting with Wet Gloves (Video!)

Geissele Automatics Super Dynamic Triggers with Flat Trigger Bow for Combat and Competition Applications: Meet the Geissele Super Dynamic-Combat (SD-C) Trigger, Super Dynamic-Enhanced (SD-E) Trigger and Super Dynamic 3-Gun (SD-3G) Trigger for Tactical AR-15 Carbines/Rifles and SBRs/Sub-Carbines

AR Combat Match Trigger: The Case for Match Triggers in Combat/Duty Rifles: Safety, Speed and Accuracy

Desert Tactical Arms Stealth Recon Scout-A1 (DTA SRS-A1) Rifle Chassis System: Compact, Modular and Super-Accurate Multi-Caliber Bullpup Anti-Materiel Sniper Rifle/Carbine

Knight’s Armament Co. KAC M110 SASS/SR-25 EM Carbine/Compact 16″ 7.62mm NATO Battle Carbine with KAC 762 MAMS Muzzle Brake and KAC QDC and CQB Muzzle Cans (Silencers/Sound Suppressors): Range Session (Photos and Video!)

KAC SR-25 EM/M110 SASS (Semi-Automatic Sniper System) 16″ Carbine: 7.62mm NATO/.308 Win. Tactical AR Battle Carbine/Rifle Outfitted with Leupold 1.1-8x CQBSS Tactical Rifle Scope for U.S. Military Special Operations (SPECOPS) Mountain Warfare Ops in Afghanistan: DR Photos from SOFIC 2010!

Bushmaster .338 Lapua Magnum MCR (Multi Caliber Rifle): Semi-Auto .338 Lapua Magnum AR Anti-Materiel/Sniper Rifle for Long-Range Interdiction. Will it live?

Barrett MRAD (Multi-Role Adaptive Design) Multi-Caliber .338 Lapua Magnum Bolt-Action Anti-Materiel/Sniper Rifle and G4tv “Attack of the Show” Crew at SHOT Show 2012 (Video!)

NEMO Arms Omen Recon .300 Win Mag (.300WM) 18″ Tactical AR Carbine/Rifle with Recoil Reduction System Bolt Carrier Group (RRS BCG), Quick-Detach (QD) Side-Charging Handle and PROOF Research Carbon Fiber Match-Grade Barrel (Video!) by

About David Crane

David Crane started publishing online in 2001. Since that time, governments, military organizations, Special Operators (i.e. professional trigger pullers), agencies, and civilian tactical shooters the world over have come to depend on Defense Review as the authoritative source of news and information on "the latest and greatest" in the field of military defense and tactical technology and hardware, including tactical firearms, ammunition, equipment, gear, and training.

Check Also

Mantis X10 Elite, Blackbeard/BlackbeardX and Laser Academy Home/Indoor Dry Fire Training Systems for Keeping Your Shooting Skills Sharp!

By David Crane david (at) defensereview (dot) com August 31, 2023 Last updated on 9/03/23 …