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Description
512 HWS® Rifle Sight512 HWS(Holographic Weapon Sight) The Model 512 HWS is a lightweight, non magnifying, optical sight designed for close to mid range engagements. It allows very fast target acquisition and engagement at short ranges while providing aiming capability out to 300 meters equal to or better than iron sights. The major combat advantage of the HWS is an Extremely Rapid Reticle On Target Acquisition. As quickly as a target is identified, the holographic
512 HWS®(Holographic Weapon Sight)
The Model 512 HWS® is a lightweight, non-magnifying, optical sight designed for close to mid-range engagements. It allows very fast target acquisition and engagement at short ranges while providing aiming capability out to 300 meters equal to or better than iron sights.
The major combat advantage of the HWS® is an Extremely Rapid Reticle-On-Target Acquisition. As quickly as a target is identified, the holographic reticle can be superimposed on the target. The sight allows operators to maintain eye contact on the target and to place the holographic reticle onto the target without shifting focus. Operators can quickly acquire the target and reticle in the same focal plane for fast and accurate shot placement.
Key Features
- Holographic Technology — This is not a red dot. EOTech uses laser holography to project the reticle, which means you see the reticle and the target in the same focal plane. Both-eyes-open shooting with no parallax shift. The reticle stays accurate even if the front window is cracked, chipped, or partially obstructed — a red dot won't do that.
- 68 MOA Ring + 1 MOA Dot — The large ring draws your eye to the target area for fast acquisition at close range. The 1 MOA center dot gives you the precision for accurate shots at distance. Together they provide three usable aiming points calibrated for .223/5.56 at 7, 50, and 200 yards. On a shotgun, the ring approximates your shot pattern.
- AA Battery Powered — Two standard AA batteries (lithium, alkaline, or rechargeable). Up to 2,500 hours on lithium, 2,200 on alkaline. AA batteries are available everywhere on the planet — no hunting for CR123s or coin cells in the field.
- 20 Brightness Settings — Twenty daylight settings let you dial the reticle brightness to match any lighting condition from dark indoor environments to full desert sun. Note: the 512 is not night vision compatible — if you need NV settings, look at the 552 or EXPS3.
- Submersible & Combat-Proven — Waterproof and submersible to 10 feet. Operates from -40°F to 140°F. This sight has been deployed by US Special Operations, military, and law enforcement units worldwide since EOTech invented the holographic weapon sight.
Details
- Range: Close & Mid-Range Engagements up to 300 meters
- Length/Width/Height: 5.6” x 2” x 2.5” (143 x 51 x 64 mm)
- Weight: 11.5 oz (325 g)
- Water Resistant: Submersible to 10 ft. (3 m) depth
- Mount: 1” Weaver or MIL-STD-1913 rail
- Power Source: Two 1.5 V AA batteries Supports lithium, alkaline, or rechargeable
- Battery Life: Lithium: 1,000 continuous hours at nominal setting 12 at room temp. Alkaline: 600 continuous hours at nominal setting 12 at room temp.
Frequently Asked Questions
Q: What's the difference between a holographic sight and a red dot? A: A red dot projects an LED onto a lens — you see a dot. A holographic sight uses a laser to record a holographic reticle pattern onto the window. The advantages: the reticle and target are in the same focal plane (faster acquisition), there's virtually no parallax, and the sight keeps working even if the window is cracked or partially blocked. A broken red dot lens kills the optic. A broken EOTech window still shows the reticle.
Q: Why AA batteries instead of CR123 or coin cell? A: Availability. AA batteries are the most common battery on Earth. You can find them at any gas station, convenience store, or military supply point. In a real-world scenario — whether that's a natural disaster, extended deployment, or just forgetting to pack spares — AA availability is a massive advantage over specialty batteries.
Q: Is this night vision compatible? A: No. The 512 has 20 daylight brightness settings but no NV-compatible modes. If you need to use this sight behind night vision goggles, you need the 552 HWS (AA powered, NV-compatible) or the EXPS3 (CR123 powered, NV-compatible, QD mount).
Q: Can I use a magnifier with this? A: Yes. The 512 pairs with EOTech's G33 3x Magnifier or similar flip-to-side magnifiers for a 1x/3x system. The rear button placement works with most magnifiers, though side-button models like the 518 or EXPS give slightly more clearance.
Q: Does the reticle work for non-.223 calibers? A: Yes. The three aiming points (ring bottom, center dot, ring top) are calibrated for .223/5.56 62gr at 2,900 fps. Other calibers will produce different zero distances at those points — you'll need to determine the ranges for your specific load. The sight works on any caliber, you just can't rely on EOTech's default aiming point distances.
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4.0 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
When and where economics went wrong
Format: Paperback
This is one of those books that can provide an epiphany to the reader -- but not very many American readers have even heard of it, unfortunately. That could be due to it's being a book primarily about English economic history, with assumptions that the reader is familiar to some extent with things like the Poor Laws and Tory socialism. But I wasn't, and was still able to glean some great insights from the work. That could be because Polanyi is not afraid of repetition. :-)
A key insight, and the one that could be summed up as the theme of the book, is Polanyi's realization that prior to about 1830, the market and the economy were considered part of society. That is, economic activity was something that people did along with everything else they did, like engage in social/familial relationships, religious rituals, etc. But with the 1830s came a paradigm shift: the advent of rational capitalism. Now, the market was considered an entity by itself, outside of society. This market entity was viewed as governed by universal laws. Like laws of physics, these market laws were independent of culture, independent of social group, independent of time period, and, in fact, independent of human behavior. While any observer of human nature would say that people often make decisions for emotional reasons -- and modern neurological research shows that virtually every decision we make is a combination of the rational and the emotional -- these market laws assumed only rational behavior on the part of economic actors.
Though Polanyi doesn't mention it, it's now easy to see how Alfred Marshall could get carried away with creating a mathematical foundation for microeconomics and how Leon Walras could, reportedly, say that if something couldn't be studied mathematically, it wasn't worth studying. There's no current way to model emotions with math, and so the Ricardian prototype of an emotion-less economics continues into the modern economics of today.
These universal market laws frees the market from any social constraints. A number of modern neo-classical economists assert that this makes economics purely amoral, i.e., without regard for any ethics. Therefore any attempts by the public, by politicians, or by workers to add ethics to the market is an interference with pure market workings, which, according to their interpretation of Adam Smith's "invisible hand", will produce optimal results if just left alone. But Smith never said that, and in fact rational capitalism, in elevating greed and selfishness to the status of goals -- see the Ayn Rand work "The Virtue Of Selfishness" -- is, IMO, not amoral at all, but rather is a morality of its own.
Anyway, back to Polanyi's insights. Another key one is the concept of a "double movement" in 19th century England. Each move to create a purer market created an ad-hoc counter move. E.g., Ricardian free trade was faced with opposition from workers losing their jobs and local firms losing business Americans can easily think of another example: where the employment of children (eventually) led to laws restricting that employment, simply because human beings have too much of a sympathetic nature to sit still for children losing limbs in the dangerous factories and mines of the time. Polanyi notes that capitalists often blame these anti-capitalist laws on planned activity by socialist anti-market groups, but he says they're actually the result of the recognition by the general public that they don't want to live under a pure market system.
Yet another good insight is Polanyi's recognition that market laws treat labor, land, and money as commodities. We can see that today, where neo-classical economists assert that the law of supply and demand should apply to workers as it applies to anything else in the economy. That is, if there's a surplus of workers in one area and a shortage in another, supply and demand dictates the flow of workers from the one area to the other. But a laid-off textile worker in South Carolina is not going to move to China for a job. That's my own example, but Polanyi offers his own from modern English history.
The book isn't perfect. Polanyi does have a tendency to generalize, a common failing among authors, IMO. E.g., in discussing the rise of fascism in the 1930s, he's on very shaky ground when he starts talking about the US or about Russian policy intentions during that period.
I gave The Great Transformation 5 stars because, even with its faults, the reader will be thinking about Polanyi's insights for some time to come. I am.
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Reviewed in the United States on May 18, 2009
★★★★★ 5
Not light reading but worth it
Format: Kindle
Much of this book was heavy reading for me, mainly due my not being familiar with the background development and history of various economic theory and associated laws over 500 or so years of British history. I did stick it out and am glad I did. There are many insights as to how we have arrived at today and the book is still relevant even though it was written in 1942. I found the last few chapters and the comments in Sources to offer the most explanations to fit modern times especially with regard to the rise of fascism. Thick but worth it.
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Reviewed in the United States on May 6, 2025
★★★★★ 4
Interesting anthropology and critique, but dense and obtuse writing
Format: Kindle
The good part is that at the end of the day, I learned a lot here, and Polanyi raised a lot of very interesting and under-discussed historical points to create his argument. It felt very similar to David Graeber (or I guess Graeber is similar to Polanyi) in that way.
The bad part is that, whereas Graeber writes with exceptional clarity and vividness, Polanyi is obtuse and dense. And I've read other books from this era, I don't think it's the time. I think it's Polanyi's writing.
Beyond that, his work serves more as analysis than prescription. It's a bit unclear exactly what he's advocating for. Which maybe is OK, though I prefer when non fiction writers offer solutions rather than just pointing out problems.
All in all, if you can settle in with his writing, there are definite gems in there.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Inspiring analysis of economic history
Format: Paperback
Polanyi presents economic history through an analysis of the "utopian" catastrophy of the self-regulating market economy.
Polanyi argues that the free market economy treats the most essential elements of human society - labor, nature, and money - as if they should be exploited like commodities. When liberalism (free marketeerism) rules, then the economy dictates what is possible in human society, and these rules are intolerable because they create conditions under which humans are impoverished and disempowered.
In his final chapter he lays out the battle ground between liberalism and its alternatives, which when he was writing (1945) were socialism and fascism. Fascism refuses the dictates of economic liberalism but substitutes in its place the dictates of a state that denies individual freedom. Socialism, alternatively, holds the only promise of true freedom for the individual where economic and political rules are developed and enforced democratically for the protection of society.
While this is not an easy read because it demands a background in history, he is a fluent and persuasive writer.
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Reviewed in the United States on February 2, 2023
★★★★★ 5
This 1944 classic recounts the fatal flaws of market liberalism that led to the Great Depression and World Wars I & II
Format: Paperback
The Great Transformation: The Political and Economic Origins of Our Time. Karl Polanyi. 1944.
In 1944, the opposing monumental classics, The Road to Serfdom by Friedrich Hayek and The Great Transformation by Karl Polanyi, were published. From the right, Hayek argued that market liberalism led to prosperity, political liberty, and prevention of authoritarian governance. From the left, Polanyi argued that the rise of market liberalism during the industrial revolution led to intolerable hardship, inevitable unsustainable countermeasures, and finally collapse into fascism, the Great Depression, and World Wars I and II.
Since their publication during World War II, these markedly opposed ideas have now been tested by seventy years of history. For the first thirty years after the war, policies reflecting Polanyi’s ideas led to a mixed economy of government policies and regulated markets in the US, northern Europe, and elsewhere that produced robustly increased prosperity broadly shared at all income levels. For the next forty years, ascendency of Hayek’s ideas led to reduction of the role of government with attendant economic instability, rising inequality (with all economic gains going to the rich in the US), and coercive imposition of market liberalism by authoritarian governments with disastrous results throughout Latin America and the former Soviet Union. Given the adverse consequences of resurgent market liberalism, the rebuttal of its ideas in The Great Transformation is as important today as ever.
In The Great Transformation, Polanyi maintains that before the industrial revolution, markets did not play an important role in human society—they were embedded in society rather than the other way around. Goods and services were generally distributed without the motive for profit by the non-market mechanisms of reciprocity according to social relations, centralized storage with redistribution, and production for one’s own use known as householding. When present, the role of markets was peripheral and subordinate to politics, religion, and social relations.
The industrial revolution brought about an almost miraculous improvement in the tools of production accompanied by catastrophic dislocations of the lives of the common people, of which poverty was merely the economic aspect. During this time, English thinkers created the theory of market liberalism, which radically reversed the previous subordination of markets to society by removing the role for government so that society was instead subordinated to self-regulating markets (without government interference).
This change required that human labor, nature, and money be turned into commodities that could be bought and sold without regard to human and social considerations. Efficient functioning of markets also required callous indifference to the social dislocation, poverty, and damage to nature that resulted and even to hunger as a motivating factor for the working class. This change from regulated to self-regulating markets that organized the whole of society on the principle of gain and profit marked a great transformation of the nature of society by the removal of democratic control of markets.
The goals of this transformation were unrealistically utopian and could never be achieved without annihilating the human and natural substance of society. Even during its installation, laissez-faire proved to be a myth. Government action was mandatory to adjust the supply of money and credit, to enforce provisions for labor and land, and to prevent political disruption. Even with this level of government activity, market liberalism still imposed unsustainable hardships on ordinary people from speculative excess, growing inequality, competition from imports, depressions, unemployment, poverty, and reduced entitlement to assistance.
By the late 1800s, these impossible pressures of the self-regulating market necessarily led to a countermovement in industrialized nations to protect their societies from the market. This countermovement included protectionism for national markets and competition for colonies to take resources from other societies. In exotic and colonial regions with the absence of protective measures unspeakable suffering resulted. Thus Polanyi characterizes market societies as having two opposing movements, referred to as a “double movement.” These two contradictory movements resulted in simultaneous struggles to expand the scope of the market because of the opportunities for some and to limit the scope of the market because of the adverse consequences for many.
These internal contradictions led to disruptive stresses and strains that were unsustainable for market societies. In the domestic economy, class conflict resulted from issues like the choice between inflation for stability of workers incomes and employment and deflation for stability of currency for investors. Market liberals from Spencer to Mises held that popular democracy was a danger to capitalism and that workers should not have the right to vote. In the international economy, relentless shocks imposed by the gold standard forced nations to consolidate around heightened national and imperial boundaries. In international politics, intensified political, military, and economic rivalries finally culminated in World War I.
By this time, the class struggle over market liberalism was at an impasse. For a critical decade, economic liberals supported authoritarian intervention in service of their deflationary policy to protect currency exchange and investment. This merely weakened the democratic forces that might otherwise have averted the fascist catastrophe. During the Great Depression, the gold standard finally collapsed, foreign debts were repudiated, capital markets and world trade dwindled away, and the global political and economic system disintegrated. In a second great transformation of society that followed, the replacements of market society by fascism, socialism, and the New Deal were similar only in discarding laissez-faire principles. The conflict between the market and the elementary requirements of an organized social life had ultimately destroyed society. World Wars I and II merely hastened its destruction.
In 1944, Polanyi appears to have regarded the utopia of market liberalism as utterly discredited. He expressed the hope that the passing of market economy could become the beginning of an era of unprecedented freedom. He noted that freedom as the absence of power and compulsion as claimed by market liberals is not possible in a complex society. The function of power is to ensure the measure of conformity which is needed for the survival of the group: its ultimate source is opinion.
Regulation both extends and restricts freedom; only the balance of freedoms lost and won is significant. The comfortable classes enjoy the freedom provided by leisure in security. They resent the suggestion to spread out income, leisure, and security to extend to others the freedom they enjoy. Obviously, those who lack security cannot enjoy the same freedom as the comfortable classes. Those who want more freedom for all need not fear that either power or planning will undermine their freedom. Regulation and control in a complex society strive to give us all the security we need to achieve freedom not only for the few, but for all.
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Reviewed in the United States on July 22, 2017