This would mean yes, you can store your magazines fully loaded forever, and nothing will happen. Officially called the spring constant, K is the value we’re investigating to answer this whole question.ĭoes K (the spring constant, or stiffness of the magazine spring) change over time from being stored fully loaded? Spring stiffness (K) and what affects itīasically, if spring stiffness (K) and compression distance (X) never change, then your spring’s ability to push cartridges up into your firearm’s receiver (F, or force) will always be the same. This means the distance your spring is compressed (X) is always the same.īut there is another constant at play in this formula, too: K. Your magazine’s length will never change, and when you’re storing your magazines, we’ll assume you’re storing them fully loaded. Obviously, X is constant in our situation. We also need to recognize which variables are constant. To figure out if long-term storage affects a magazines’ ability to run properly, we need to figure out what variables are at play. X is the distance the spring was compressed. Remember that for later.Īnd remember, K is the spring’s stiffness. This force (F) is called elastic potential energy. The more force there is, the more reliably the magazine can cycle rounds through your gun. In our equation, force (we called it magazine tension) is a measure of how much the magazine’s spring can push back against all those loaded cartridges. Hooke’s Law is a simple formula: F = -K(X)įor the sake of our question and argument, it can be read as, “Magazine tension equals the spring’s stiffness multiplied by how much distance it’s compressed”. Hooke’s Law says when a spring at rest is compressed with force (in this case, by the action of cartridges being loaded into the magazine), it creates an opposing force. Whether you’re storing 30-round magazines for an AR-15 you built with an 80 percent lower, or a 9mm Glock with a standard 17-rounder, you can apply what you learn in this guide to any magazine you store: Hooke’s Law (how a spring makes force)įirst, we need to know the scientific principle of Hooke’s Law. So, how does a compression spring work? What forces are at work, and how might those forces cause (and prevent) a spring from deforming over time? Let’s take a look: How a magazine spring worksĪll magazines use compression springs. Let’s break down the science of magazine springs – or really, compression spring physics in general – and then figure out how that affects the function of your firearms. We’re setting out to finally put this debate to rest with science and facts. We don’t guarantee that we will receive your returned item.8.2 Other Useful Resources: The science of magazine springs If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. If you receive a refund, the cost of return shipping will be deducted from your refund. You will be responsible for paying for your own shipping costs for returning your item. To return your product, you should mail your product to: Qualification Targets Inc., 1145 Clyde Hanson Dr, Hammond WI 54015, United States Only regular priced items may be refunded, unfortunately sale items cannot be refunded. If you’ve done all of this and you still have not received your refund yet, please contact us at items (if applicable) There is often some processing time before a refund is posted. Then contact your credit card company, it may take some time before your refund is officially posted. If you haven’t received a refund yet, first check your bank account again. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. We will also notify you of the approval or rejection of your refund. Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. Any item that is returned more than 30 days after delivery Any item not in its original condition, is damaged or missing parts for reasons not due to our error There are certain situations where no refunds are granted (if applicable) To complete your return, we require a receipt or proof of purchase. It must also be in the original packaging. To be eligible for a return, your item must be unused and in the same condition that you received it. If 30 days or (10 days for Byrna brand Products) have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. Our policy lasts 30 days or (10 days for Byrna brand Products).
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