Today’s market for firearms and other military stuff is pretty big and full of various products. You can buy almost anything! Moreover, you can build your own firearm by purchasing only those parts you want to have. Regarding AR-15s, it’s possible to build a better rifle for a lower price that will be exactly what you need.

Best AR 15 Lower - Editor's Choice

Let’s begin with a very important element — a lower part. Without it, you won’t be able to hold your rifle and shoot. Usually, a lower part kit includes a pistol grip, hammer, trigger, and a slot for a magazine. However, the complete set may vary. But how to understand which lower part kit (LPK) is better? The variety of models is insane, and they have pretty different prices. Is it necessary to spend a few hundred or are 50 bucks enough? Look at this top 14 to find out what you really need!

TOP-14 AR 15 Lower

ImageProductBrand
CMMG Inc AR-15 Lower Reciever Parts KitCMMG IncBUY
Product Info for CMC Triggers Complete Lower Receiver Parts Kit for AR-15Product InfoBUY
Smith & Wesson AR-15 Customizable Lower Parts KitSmith & WessonBUY
Bravo Company Gunfighter AR-15 Enhanced Lower Parts KitBravo CompanyBUY
Strike Industries AR Enhanced Lower Receiver Parts with TriggerStrike IndustriesBUY
Aero Precision AR-15 Magpul MOE Lower Parts KitAero PrecisionBUY
KAK AR-15 Lower Parts KitKAKBUY
TRYBE Defense AR-15 Mil-Spec Complete Lower Parts KitTRYBE DefenseBUY
Aero Precision AR-15 Lower Parts KitAero PrecisionBUY
TPS Arms Lower Parts Kit Ar-15 Without Fire Control GroupTPS ArmsBUY
Aero Precision AR-15 Magpul MOE SL Lower PartsAero PrecisionBUY
Tactical Superiority AR-15 Lower Parts Kit A2 Black GripTactical SuperiorityBUY
Guntec USA AR-15 Complete Lower Parts KitGuntec USABUY
RISE Armament Lower Parts Kit Ar-15 Minus TriggerRISE ArmamentBUY

#1 CMMG Inc AR-15 Lower Reciever Parts Kit

CMMG Inc AR-15 Lower Reciever Parts Kit

To open our top list, we chose an LPK designed by CMMG. This kit doesn’t include a pistol grip with a fire control group and trigger guard. What is great about this model is that it’s mil-spec compatible. You can easily use it with any standard rifle to increase the efficiency of shooting. Besides, the price is affordable enough, so you won’t regret this purchase.

What I liked:
  • Compatibility
  • Durability
  • Easy to use
  • Price
What I didn’t like:
  • Not a full complete set

#2 Product Info for CMC Triggers Complete Lower Receiver Parts Kit for AR-15

Product Info for CMC Triggers Complete Lower Receiver Parts Kit for AR-15

One more example of a similar kit without a grip and fire control group. All the details are made of high-quality steel, which means this lower part is durable enough to serve you well under various conditions. Plus, it’s also not expensive, so you can take a look at this model when you are looking for good customization for your rifle.

What I liked:
  • Price
  • Compatibility
  • Durability
  • Easy to use
What I didn’t like:
  • Not a full complete set

#3 Smith & Wesson AR-15 Customizable Lower Parts Kit

Smith & Wesson AR-15 Customizable Lower Parts Kit

A lower part by Smith&Wesson is a favorite choice of many customers because it’s a great, reputable brand that knows how to make high-quality, beautifully designed products. In this kit, you will find all the necessary details, pins, and springs to customize your AR 15. Add a good trigger to this kit if you want to make it even better. Compatible with mil-spec standards.

What I liked:
  • Price
  • Compatibility
  • Durability
  • Easy to use
  • Nice design
What I didn’t like:
  • Not a full complete set

#4 Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit

Bravo Company Gunfighter AR-15 Enhanced Lower Parts Kit

If you are not a fan of searching for necessary elements separately and you want a full bundle of well-designed details, this kit will be a great choice. A high-quality BCM trigger assembly, trigger guard, pistol grip, mod 3, and other details with an electroless nickel finish will provide you with the smoothest operation and the best shooting experience. In addition to this, this lower part is pretty easy to install. You don’t have to ask a specialist to help you. Customize your rifle on your own as you wish using only the best products.

What I liked:
  • Easy to install and use
  • Durability
  • Electroless nickel finish
  • Smooth trigger pull
  • Full complete set
What I didn’t like:
  • Price

#5 Strike Industries AR Enhanced Lower Receiver Parts with Trigger

Strike Industries AR Enhanced Lower Receiver Parts with Trigger

There is also a good mix of the previous models: a kit that has everything, except for a grip. Many shooters are satisfied with their grips and they don’t want to spend more money, which is pretty understandable. But it doesn’t mean they don’t need a good lower part with a trigger, hammer, and disconnector that are durable and corrosive-proof, thanks to the phosphation and precision cut. Besides, the kit also has an improved bolt catch with a better grip surface to increase your shooting efficiency.

What I liked:
  • Easy to install
  • Durability
  • Resistance
  • Improved bolt cath
What I didn’t like:
  • Price
  • No pistol grip included

#6 Aero Precision AR-15 Magpul MOE Lower Parts Kit

Aero Precision AR-15 Magpul MOE Lower Parts Kit

This model differs from those we have reviewed because it has two variations: you can choose a lower part kit with or without a fire control group. Plus, there are two available grips to choose from: MOE and MOE SL. What comes to particularly this kit, it has no FCG in the complete set and it’s available in black or flat dark earth color. This is a nice solution for those who like to have many customization options.

What I liked:
  • Easy to use and install
  • Variability
  • Full complete set
  • Compatibility
What I didn’t like:
  • Price

#7 KAK AR-15 Lower Parts Kit

KAK AR-15 Lower Parts Kit

This is a very standard kit for those who need nothing but a custom lower part for more comfortable use. It doesn’t have outstanding features or unique components — it’s just a good, solid lower part that offers all the necessary details at a low price. So if you want something simple, affordable, and reliable to make your AR-15 a little better, go and buy this kit.

What I liked:
  • Price
  • Easy to install and use
  • Durability
What I didn’t like:
  • Low on features

#8 TRYBE Defense AR-15 Mil-Spec Complete Lower Parts Kit

TRYBE Defense AR-15 Mil-Spec Complete Lower Parts Kit

One more complete lower part kit for a very affordable price. All the details are designed accurately to fit your AR-15. This kit includes everything you need: hammer, trigger, bolt catch, buffer retainer, magazine catch, pistol grip, necessary pins and springs, and so on. You will never get disappointed by this product.

What I liked:
  • Price
  • Complete set
  • Easy to install and use
  • Compatibility
What I didn’t like:
  • Low on features

#9 Aero Precision AR-15 Lower Parts Kit

Aero Precision AR-15 Lower Parts Kit

This is the second variation of the 6th position. What comes to this kit, it comes with a MAGPUL MOE SL grip and MOE trigger guard. Other elements are quite the same, you can view the full list on the site. What’s great about these lower parts is that they are interchangeable.

What I liked:
  • Easy to use and install
  • Variability
  • Full complete set
  • Compatibility
What I didn’t like:
  • Price

#10 TPS Arms Lower Parts Kit Ar-15 Without Fire Control Group

TPS Arms Lower Parts Kit Ar-15 Without Fire Control Group

Going back to kits with no fire control group included, this model designed by TPS Arms is considered to be one of the most authentic and popular on the market because this brand is very reputable. However, there is nothing much to say about this kit. It’s better to try it on your own if you are looking for a lower part without a fire control group.

What I liked:
  • Durability
  • Easy to use
  • Compatibility
  • Reasonable price
What I didn’t like:
  • Not a full complete set

#11 Aero Precision AR-15 Magpul MOE SL Lower Parts

Aero Precision AR-15 Magpul MOE SL Lower Parts

Another variant of the lower part kit by Aero Precision. This one is for shooters who search for a good lower part with a MOE SL grip and MOE trigger guard but without a fire control group. Such a complete set is much cheaper, which may be a crucial aspect of choosing the right kit. It could be reasonable to keep an existing FCG or to buy it separately.

What I liked:
  • Price
  • Easy to use and install
  • Durability
  • Compatibility
What I didn’t like:
  • No FCG

#12 Tactical Superiority AR-15 Lower Parts Kit A2 Black Grip

Tactical Superiority AR-15 Lower Parts Kit A2 Black Grip

What comes to affordable kits, this one is also our favorite. It provides you with everything you need, despite its price is low. The only downside of this model is the compatibility, so not all of us can enjoy such a lovely lower part. Don’t be afraid to purchase this model if you have a suitable rifle.

What I liked:
  • Price
  • Easy to use and install
  • Full complete set
What I didn’t like:
  • Compatibility

#13 Guntec USA AR-15 Complete Lower Parts Kit

Guntec USA AR-15 Complete Lower Parts Kit

Although the name says that it’s a complete kit, this kit doesn’t contain any pistol grip, which makes it a little expensive. On the other hand, this is a very durable, easy to use the lower part that provides you with a smooth operation. The details are made of high-quality materials, so you don’t have to worry about the lifetime of this lower part.

What I liked:
  • Easy to use
  • Durability
  • Compatibility
  • Smooth operation
What I didn’t like:
  • Price

#14 RISE Armament Lower Parts Kit Ar-15 Minus Trigger

RISE Armament Lower Parts Kit Ar-15 Minus Trigger

To end this list, we’d like to represent a good kit that consists of 20 pieces with standard trigger pins but with no trigger. It’s cheap and straightforward, so you can buy it, no matter how skilled you are. Plus, it’s good to have an opportunity to modernize your rifle with different elements.

What I liked:
  • Price
  • Easy to use and install
  • Durability
What I didn’t like:
  • Not a full complete set

FAQ

Can you build an AR pistol with an 80 lower?
Yes, such lowers can be used for both: rifles and pistols. But it’s prohibited by federal laws.
How long is an AR 15 lower receiver?
30.5 inches.
What makes an AR 15 lower a pistol?
The absence of stock, a short barrel (less than 16 inches), small dimensions (shorter than 26 inches). It doesn’t matter if it performs as a rifle.
What should I look for in an AR lower?
Pay attention to materials used in a lower. 4150 steel would be the best choice.
Does an AR lower affect accuracy?
No, all the components that affect accuracy are located in the upper receiver.
Is upper or lower AR 15 more important?
Both of these parts are equally important for you because the rifle needs both of them to operate.

Conclusion

We believe that all models on the list are great and worth trying. But we also think that there are a few lower part kits that should be pointed out.

The best cheap models:

The best pricey models:

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