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Glock® Compatible 80 Lower - How to Build One Yourself

Posted by Jordan Vinroe on Dec 26, 2019

Its polymer construction makes assembling a Glock® compatible 80 lower simpler than you may think. Much like an 80% lower receiver80% pistol frames allow a gun enthusiast to build nearly every series available right in their own garage. Making your own polymer 80 pistols is a favored alternative to just simply buying one from a licensed dealer.

These builds are a popular choice when assembling a new 80%. All 80% Glock®-compatible pistols universally accept all OEM (Original Equipment Manufacturer) and aftermarket components. This makes customizing the perfect Glock®-compatible build possible.

Why Build A Glock® Compatible 80 lower?

Pistol built with Glock® compatible 80 lower

Made doable by our Second Amendment rights, pistol lowers can be easily, and legally finished in the seclusion of your home with tools you most likely already own. Attention to detail, comprehension of basic tools, and precision are required to complete this task. Mistakes and sloppiness can cause faulty firing guns and may end with injury.

A great sense of personal satisfaction and achievement may be attained by building your own firearm. It is also a great way to get to know your gun intimately and learn about its function and assembly. Whether you are building a pistol, with a Glock® compatible 80 lower for personal enjoyment, self-defense, or for the challenge, other benefits include:

  • No FFL required.
  • No serial number or background check.
  • No transfer fees like a typical firearm.
  • Ships to your door for convenience and privacy.

Legal Requirements

Always stay up-to-date with federal and local gun laws in your area to keep in 100% compliance when putting together your firearm. Individual states, like California and Washington, may have their own set of rules for 80% lower receivers. In any state, if you are not able to legally own a firearm, you are not able to legally build a firearm.

Which Glock® Compatible 80 Lower Is Right For You?

These pistols are available in a plethora of variations of the original theme. Choosing the right one for you can be complicated without first familiarizing yourself with the basic types. There are two main areas to consider: the frame size and caliber.

Frame Size

The following are four basic Glock®-compatible pistol frame sizes available on the market (with the exception of .45 GAP pistols and Competition models).

Standard, as the name indicates, is the standard frame size of the original 9mm. Together with a Glock® compatible 80 lower, this frame is used to build a pistol. The Standard’s accuracy makes it ideal for home and self defense as well as outdoor training.

The “plus” sized .45 and 10mm 21 and 20 have a larger grip girth than the Standard’s in 9mm, .40 or .357 calibers. To reduce the circumference of the grip frame at the rear of the “plus” sized models, a short frame (SF) option is available

Standards can be concealed carried, but because of the overall size difference in barrel and grip frame length, they can be a little tougher to conceal. When it comes to choosing a frame size and Glock® compatible 80 lower receiver to finish your pistol, there are better options for this purpose.

The mid-sized Compact frame, such as the 19, is much better for concealed carry. Despite being almost an inch shorter in length and a half-inch shorter in height, only two rounds of magazine capacity were sacrificed with this model. The Compact frame is popular with gun enthusiasts.

Both Subcompact and Subcompact Slimlines are colloquially known as “minis.” Subcompacts are generally more difficult to handle. This is because the recoil and muzzle blast can pack a real punch. With a reduced magazine capacity, building a gun with this frame and Glock® compatible 80 lower is suitable for personal defense. The Subcompact frame size is perfect for deep concealed carry and is even capable of being concealed in ankle holsters.

Slightly larger than the standard Subcompact, the Subcompact Slimline chambers the 9mm in a single stack magazine. Although, it is not the most popular pistol on the market, but with a six round magazine capacity, it’s an easy gun to shoot and is quite accurate.

Caliber Choices

Brass 9mm bullets standing upright

Now that you’ve decided on a frame size and Glock® compatible 80 lower to build your gun with, you’ll need to choose a caliber size to complete your pistol. Most frame sizes have a basic caliber choice: 9mm; .40; .357; 10mm; or .45.

  • The well known .40 caliber pistol is a robust, high pressure pistol with noticeable recoil.
  • The .357 is a big cartridge with a lot of chamber pressure and less recoil. It has more shooting power than the .40 caliber.
  • The 10mm caliber was designed to improve on the .45 ACP, and is a powerful, semi-automatic pistol cartridge. It’s capable of reaching 1,200 feet per second and able to maintain accuracy beyond 50 yards.
  • The .45 is a popular caliber because of its low velocity and high stopping power.

Shooters of all levels will enjoy the feel of a 9mm, in any Glock® compatible 80 lower and frame size. The 9mm is the caliber of choice when it comes to concealed carry, and home defense. It’s easier on your wallet and recoils less yet is still accurate and effective. The only way to really find out which frame is the best fit for you is to shoot a variety of different pistols. Use common sense and pay attention to detail when building your gun.