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The Best (And Most Popular) AR-15 Calibers [2024]

The Best (And Most Popular) AR-15 Calibers [2024]

Posted by 80-Lower.com on Jul 25th 2024

With dozens of calibers available for it, the AR-15 has become one of the most popular rifles in America. But with so many options, picking any one cartridge can seem overwhelming -- so, here are our the top picks for various tasks: All-purpose, long-range, personal defense, subsonic/suppressed fire …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


5.56 vs .223: What's The Difference?

5.56 vs .223: What's The Difference?

Posted by 80-Lower.com on Jul 22nd 2024

There's one question every new AR-15 owner asks when buying ammo for the first time: Can you shoot 5.56 NATO in a .223 Remington gun? And is the opposite true: Can you shoot .223 Remington in a 5.56 rifle? 5.56 NATO vs .223 Rem: What's Different? To answer those questions, we need to see the r …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


What is .223 Wylde?

What is .223 Wylde?

Posted by 80-Lower.com on Jul 22nd 2024

Whether it's safe to shoot 5.56 NATO in a .223 Remington-chambered rifle has been a longstanding debate, especially in the world of AR-15s (we cover this in detail in our guide: 5.56 vs .223: What's The Difference?). That debate can be laid to rest, now, thanks to the introduction of the .223 Wylde. …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


What is Ballistic Coeffient? Bullet Accuracy Explained

What is Ballistic Coeffient? Bullet Accuracy Explained

Posted by 80-Lower.com on Jun 18th 2024

Lots of math, physics, and engineering have gone into maximizing the accuracy of modern firearms, including the rounds we chamber. Ballistic coefficient (BC) is one way of calculating the accuracy of a bullet in flight -- but what, exactly, does it represent? Let's explain.What is Ballistic Coe …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


Series 70 vs series 80 1911s: What's Different? Which is Better?

Series 70 vs series 80 1911s: What's Different? Which is Better?

Posted by 80-Lower.com on Jun 6th 2024

The 1911 has, since its original design over 100 years ago, remained relatively the same ever since -- but there are some key differences between the gun's original design, called the Series 70, and the updated design, known as Series 80. Let's compare.What is a Series 70 1911?The Series 70 1911 -- …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


How to Assemble a 1911 Slide (Picture Guide)

How to Assemble a 1911 Slide (Picture Guide)

Posted by 80-Lower.com on Apr 20th 2024

Bought a 1911 slide kit? Finishing your 1911 build kit? Here's how to assemble your slide! If you're completing an 80% 1911 build, follow our guide on how to assemble your frame. NOTE: These instructions cover assembling a series 70 slide. Series 70 slides are what both 80% 1911s and many "m …

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At 80-lower.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.


We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.