AMSD OM 50 Nemesis sniper rifle (Switzerland)

AMSD OM 50 Nemesis sniper rifle (Switzerland)

OM 50 Nemesis Mk I OM 50 Nemesis Mk II OM 50 Nemesis Mk III
Caliber .50 BMG (12,7x99)
Operation: bolt action, single shot bolt action, magazine-fed repeater
Overall length from 1029 mm (with 381mm barrel) to 1562 mm (with 838mm barrel) buttstock fully extended: from 1029 mm (with 381mm barrel) to 1562 mm (with 838mm barrel)
buttstock folded: from 774 mm (with 381mm barrel) to 1232 mm (with 838mm barrel)
Barrel length 381 to 838 mm (15" to 33"), changeable
Weight, empty 10 to 15 kg, depending on installed barrel
Feed system single shot 5-round detachable box magazine

The concept, for what later became the "Nemesis" large caliber sniper rifle, was devised in 2001 by two former military, the retired US Marine Corps officer, James Owens and the Swiss Chris Movigliatti. First prototype was tested only 3 months after the design inception. In 2003, first production batch of rifles was made by AMSD, a Swiss company, highly specialized in the design of precision military light armament. The new weapon was officially christened as the OM 50 Nemesis (OM standing for names of the designers, 50 for caliber and Nemesis for the ancient Greek goddess of justice and vengeance).
The prime niche for this new weapon is precision anti-material shooting for military and police applications. The weapon can be configured as well for urban warfare as for long range target operations. A civilian version exists also for long range precision shooting. For this reason, the OM 50 Nemesis rifle features a fully modular design with three basic versions, known as Mk I, MK II and Mk III respectively. Each of these versions can be fitted with a variety of quick-change barrels, of different profiles and lengths, as well as with different add-ons (high efficiency muzzle brakes or detachable silencers / sound moderators). Barrel lengths vary from 381 mm / 15 inches for short range (urban) shooting against hardened targets and up to 838 mm / 33 inches for accurate long-range shooting. Barrel change can be accomplished in the field in less than 2 minutes, using a DIN screwdriver.

All OM 50 Nemesis rifles are built around the same aviation grade aluminum-alloy receiver and (steel) bolt group with a manually operated, rotary bolt. Bolt heads lock directly into the barrel extension with three radial lugs, relieving receiver from most of the stress and providing constant headspace, needing no adjustment. Barrels are free-floated, and are held in the receiver by a set of cross-screws. Trigger is of two-stage type, fully adjustable. The forend is attached to the receiver. Top of receiver is provided with one or more Picatinny type rails which can accept a variety of telescope and other accessories (laser; Night Sight; light). The top rail can be delivered with a 20 MOA to 40 MOA angle.
The OM 50 Nemesis Mk I has a manual feeding block, and features an adjustable fixed buttstock. It can be upgraded to the OM 50 Mk II configuration by taking out the manual feeding block and replacing/adding (1) the 5-round detachable box magazine, (2) the side-folding adjustable buttstock, (3) the folding bipod (attached to forend) and (4) the rear folding monopod (attached to the buttstock). Further upgrade, which includes extended forend with additional Picatinny rails, constitutes the OM 50 Mk III configuration. Depending on the mission, a particular version of the OM 50 Nemesis can be easily converted by the operator to another (up and down), with installation or deinstallation of necessary parts and modules.

Accuracy of the OM 50 rifles in field (real-life) conditions is described as 0,5 MOA at 300 meters and sub 1 MOA at 1000 meters; in testing, while fired by an experienced USMC sniper, OM 50 rifle shot 6x5 cm (about 2 1/2 inch) groups at 1000 yards (911 meters), which accounts for sub 0,25 MOA accuracy. The gun has already been commissioned with various police and military special operation forces.

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18 Comments

4 years 32 weeks ago, 11:01 PM

Sono34

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Damn Snake, you sure know how to find some of the best damn rifles around.

4 years 32 weeks ago, 11:24 PM

greg az

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Due to a number of reasons snake is no longer an active member of our little cyber gun club.. Bringing you up to speed as you seem to like it here, and so far you've been pretty good at putting up with our odd, but wise group.. You will find a lot of old posts from Snake aka snak, and yes the boy had an eye for long range rifles, but do not expect to see a response from him.

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 32 weeks ago, 11:27 PM

Sono34

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Odd? Shoot yall are

Odd? Shoot yall are practically normal and half the time i dont expect responses from people so my hopes aint dashed away.

4 years 32 weeks ago, 11:29 PM

runawaygun762

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He was on here yesterday, wasn't he?

"I have always been a soldier. I have known no other life. The calling of arms, I have followed from boyhood. I have never sought another." From The Virtues of War, by Steven Pressfield.
4 years 32 weeks ago, 11:31 PM

samD

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and had no power for a few days. Them shiny trailers get cold inside, without alot of heat. He did post a few pics.

4 years 32 weeks ago, 11:38 PM

runawaygun762

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Shiny trailers, hell

I lived in a single-wide in Missouri from my sophomore year to graduation. I know how drafty and cold them fuckers are in winter, especially when you can't afford propane for the tank out back.

"I have always been a soldier. I have known no other life. The calling of arms, I have followed from boyhood. I have never sought another." From The Virtues of War, by Steven Pressfield.
4 years 32 weeks ago, 11:38 PM

greg az

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Sorta guessing more to it than power outage, but who knows..neh

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 32 weeks ago, 11:46 PM

samD

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Greg how are you man? It was a balmy 71 here today, sunny and calm. Sposed to be 73 ish tomorrow,

4 years 32 weeks ago, 11:40 PM

Sono34

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Question

Why'd yall call him Snak? Or is it on a need to know basis?

4 years 32 weeks ago, 11:43 PM

samD

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Moon Pies and RC Cola. He is a rather large boi. If he ever would be a sniper he would have to disguise himself as a building of some sorts.

4 years 32 weeks ago, 11:44 PM

Sono34

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Oh... gotcha....

Oh... gotcha....

4 years 32 weeks ago, 11:50 PM

samD

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emotionally drained amd my contaxt has gone to the back of my shull someplace and I am ryping blind...

4 years 32 weeks ago, 11:52 PM

Sono34

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nite samD

nite samD

4 years 32 weeks ago, 11:52 PM

greg az

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I really dont want to bad mouth the lad, and guessing you wont hear any of us doing that. Even if he doesn't come back, but our (and he was "our") young Snake was/is a trip and a quarter. You sorta never knew what would he would come up with as fact (some times his imagination, if you get the pic) the redeaming thing was he would be the first to admit when he screwed up with some outragious story. Snake (jon) is a youngster who actually has a good heart, he might have an iq like par golf sometimes, but all in all a good kid who is sorta being raised (tough love, and guidance) by all of us who like the kid, and want to make him into the MAN he absolutly can become. The "snak" thing comes from one time when he called himself that by accident.

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 32 weeks ago, 11:53 PM

greg az

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Night Sam..

see ya in the am pard

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 32 weeks ago, 11:53 PM

runawaygun762

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Okay, time to start passing around the hat for the Runawaygun762 Needs This Rifle and a Ticket to the Afghan/Pakistan Border fund. Nevermind, this'd be too heavy. Maybe just a TacSat radio, direction/deflection book for the satellites, a map, and a pair of binos. Let the planes do the real work.

"I have always been a soldier. I have known no other life. The calling of arms, I have followed from boyhood. I have never sought another." From The Virtues of War, by Steven Pressfield.
4 years 32 weeks ago, 11:53 PM

Sono34

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i gotcha's now

i gotcha's now

4 years 32 weeks ago, 12:10 AM

greg az

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I bought a pair of Stiener in Tucson back in 88, first and only "good" set of optics, don't know how they would compare today, but in 88 they were better than anything i had ever seen. Pilot 7 power, the only reason i got the Pilot was they were the only ones in stock. A sporting goods store (can't remember the name) was going out of bussiness, and everything was marked down to great prices, and then the last 3 or 4 days it was half off the that!!. I paid 49 bucks for thme.

a man has to hold his word, hold his beliefs, and hold a good sight picture.
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4 years 35 weeks ago
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