Building your own AR-15 out of parts is a lot of fun. You may also acquire a fantastic gun at a great price.
The lower components kit is something that gets overlooked during building. Buttons, levers, and pins make up the majority of the package. Many builders believe that as long as the pieces are made of metal, they should be OK.
This isn’t always the case, though. When one of your pins backs out or your safety selector breaks while firing, you’ll wish you’d spent a little more time and money on a good lower parts package for your rifle.
What is a Lower Parts Kit?
A lower parts kit is a collection of over 100 distinct parts for building or repairing a rifle. Because the majority of the pieces in the kit are for the bottom half of the rifle, it’s dubbed a lower parts kit. The trigger, safety, grip, hammer, magazine catch, and buffer assembly are some of the most significant parts included in the best AR15 lower parts package.
Trying to bring in each of these elements separately is a time-consuming and costly operation. To save money and time, the bottom components kit was constructed.
The greatest thing is that if you acquire a well-rated lower parts kit from a reputable provider, you can expect a consistent level of quality across the board. This may be something you wouldn’t get if you bought everything separately.
Brownells AR-15 Lower Parts Kit 5.56
This kit is for anybody wishing to enhance some of the AR-15’s fundamental components. This may need you to perform a bit more work on your own, but it includes all of the parts you’ll need for your bottom receiver.
When you buy this lower parts kit, you get to pick your fire control group, as well as your grip and stock assembly.
It’s worth noting, though, that if this is your first time working on a rifle, this is probably not the ideal option. These are more complicated pieces that demand more care than the majority of other kits. Overall, this is a fantastic lower parts kit for individuals who are familiar with assembling rifles.
CMMG – AR-15 Lower Parts Kit
The CMMG – AR-15 kit is an AR-15 lower receiver parts kit that includes all of the internal components needed to finish or repair an AR lower receiver. It includes high-quality components that work together to guarantee smooth operation, as well as everything a shooter needs to finish a lower receiver construction.
These parts are packaged in color-coded bundles with similar parts for simple assembly, making them ideal for novices who have never assembled an AR-15 before. The CMMG also comes with A2 pistol grips made of molded polymer and a Mil-Spec trigger with a single-stage pull of 6 to 612 pounds for service rifles.
Bravo Company AR-15 BCMGunfighter Enhanced Lower Parts Kit
Bravo Company makes rugged AR-15 rifles. They’re inexpensive, and they perform admirably. The Bravo Company AR-15 BCMGunfighter Enhanced Lower Parts Kit is the lower parts kit that comes standard with practically any Bravo Company weapon.
This kit comes with a pistol grip and trigger, which is a huge plus. Even if you don’t have a stock, this kit contains everything you need to manufacture a full firearm in the eyes of the ATF.
The pistol grip and trigger aren’t cheap knockoffs, either. They’re genuine Bravo Company equipment. This kit is a fantastic buy just because of the price.
All other components are machined or forged to mil-spec specifications and go through Bravo Company’s stringent quality control procedure. As a result, you can rest assured that your components will fit your lower right out of the box.
The trigger guard is the only component that isn’t mil-spec. This is because it is superior to mil-spec. It’s a curved trigger guard that allows you to reach your trigger more easily.
Geissele Automatics Lower Parts Kit
Geissele Automatics’ AR-15 triggers and components are well-known. Geissele has lately been awarded some military contracts. So, if you’re wanting to keep expenses down, the Geissele Automatics AR-15 Lower Parts Kit is hard to match.
Part of the reason for the low pricing is because there is no trigger or pistol grip included. Remember to account for those expenses.
The parts, on the other hand, are of exceptional machining and forging quality. Once you’ve installed the pieces, they’ll endure a long time. However, some of the pins may require sanding or filing to secure their position.
The safety selector has a great positive throw that’s hard to accidentally activate. However, unlike many mil-spec safety selections, it is not reversible. Overall, this Geissele kit performs admirably for its intended purpose: it’s a functional, no-frills bottom parts kit.
Double Star – AR-15 Lower Parts Kit
The Double Star Lower Components Kit is an AR-15 lower receivers kit that includes high-quality American-made parts and everything you’ll need to finish the job. The kit contains a firing control group made of mil-spec heat treated 8620 steel that will endure the life of the weapon. All touchpoints have a clean finish, and the trigger pull is snappy with minimal creep or drag. Metal injection molding is also used in the lower kits, making this kit a cheap option.
Double Star’s components are also easier to install than the competition’s since they employ coiled steel spring pins instead of ordinary split roll pins. This kit includes everything you’ll need, including a backup takedown detent and spring in case one of the springs disappears during installation.
How to choose the right lower parts kit
If you’re buying the lower parts kit to repair an existing rifle, the most crucial thing to consider is whether the components will fit. Depending on how you personalized your rifle when you initially bought it, there may be minor variances in size.
As previously said, you do not want parts that are prone to breaking. Simply reading product reviews can help you avoid making a poor decision. If there are any difficulties with durability, previous purchasers will undoubtedly voice their concerns.
Not all AR-15 parts kits or construction kits include everything you’ll need to assemble your bottom components. Having a lot of options might help you make better decisions. We propose that you look for the finest lower parts kit, which contains a Fire Control Group, AR-15 stock and buffer system, pistol grip, and trigger, among other things. For further utility, you may add a free float quad rail and a foregrip bipod.
It will undoubtedly make the procedure much more tolerable. Building a rifle may be enjoyable, but finding and purchasing the necessary parts can be time-consuming.
As a result, you must ensure that you get a lower parts kit that will provide you with the finest results. This guide has been created with the goal of providing you with the information and sample kits you need to make an informed buying choice.