7 Best AR Lower Receiver For Your Rifles – 2020

by John Tylor | Last Updated: June 29, 2020

The half cost of AR is dependent upon the AR lower receiver when it needs to be changed. So when it changes it hurts a lot in the budget user but there is also a fact that it gets out of service after a long term of use and in normal self- defense purposes it takes a long year.

Sometimes it’s prepared up to some conditions to save some money. The lower part of AR doesn’t have a lot of moveable parts as compared to the upper so it lasts long and reliable, so using the bad quality or cheap AR’s lower can affect your performance and also a bad idea.

The two things matter the most firstly good or exact fit and its finish. All the dependencies of the rifle are on the lower receiver, and both the upper and lower receiver should be fit fine and tight so that it works properly when a trigger is pulled.

And one thing always cleans the whole gun when you interchange any part and check few rounds so that it may be adjusted to the exact position. So due to these reasons, the lower receive built to its exact same and maintain the standards. 

There are many manufacturers that make the standard quality lower receiver at a reasonable price and that fits perfectly.

Seekins Precision SP223

Our Suggestion-

Seekins Precision SP223

  • Milled from 7075-T6 billet aluminum.
  • Low weight.
  • Easier access while wearing gloves.

Here are the Best AR lower receiver sorted for you:-

1- Aero Precision AR-15 Gen 2 Stripped – Best Overall AR-15 Lower Receiver

Aero Precision AR-15 Gen 2 Stripped

This is the second generation lower receiver, for long-lasting use available in the market. This lower receiver made from the forged, 7075-T6 aluminum. This frame is strong enough for the rifles such as 5.56mm, 6.5mm, 6.5mm, 300 Blackout, and 9 mm AR-15s. 

This is built on the basis of the military-specification factor. The property and function are quite the same but the only things which I don’t like are the trigger guard is not integrated with it.

If it was with it then this may be the best ar lower receiver at the decent price. This lower part fits very nicely with your upper receiver like a leach, fits are fine and get adjusted within few rounds of bullet, enables to tight the fit so rifle clings less and has more accuracy and stability in action. 

Overall this is a great price for outstanding performance.

ITEM DETAILS

  • Cartridge: 5.56 mm NATO
  • Finish: Black
  • Style: Stripped

2- Anderson Manufacturing Stripped – Best Budget

This piece of ar lower is popular due to its low price and last long durability that will last the rest of your life. This piece is also made up of forged, 7075-T6 aluminum. It is coated with hard-coated anodizing that prevent corrosion and make it resistant. 

Since in this also there is no trigger guard so easily adjusted with your AR and the form factor is standard mil-spec but sometime there will be a problem like unusual trigger pull come with this part.

That’s, not a big deal many of the similar products don’t have guard but still, there is a demand. Since there is no extra support for the adjustment with the upper receiver so sometimes it clings when fired or operates, the standard is maintained but sometimes this problem arises. 

This may be the best option for the lower receiver if the AR needs to be built manually, while not crossing the budget of the actual new price of the AR 15.

ITEM DETAILS

  • Cartridge: 223 Remington, 5.56 mm NATO
  • Finish: Black
  • Style: Stripped

3- James Madison Tactical 80% Polymer Gen 2 – Best Polymer

There is something new and different among all, as its name says 80% polymer and best polymer based ar lower receiver in the market. Example of strong, durable, and reliable for most of the applications. This is based on the standard requirement for the AR-15 rifles. 

Since it is a polymer-based so easy to operate and adjust in your rifle. The set of this piece also includes the instruction and guide for adjusting into a complete lower receiver and you need some tool before adjusting this to its place.

For durability, it includes the magazine bracket with it, bolt release ports and upper receiver interface point foe adjustment, and a better fit with the other parts. There is no problem with rattle with this polymer bases receiver. 

It includes the trigger guard and big enough to better access with or without gloves and magazine area as well for support. Best for low weight requirement and made your rifle even more balanced.

ITEM DETAILS

  • Cartridge: 223 Remington
  • Finish: Black
  • Style: 80%

4- Spikes Tactical Mil-Spec – Best Full-Auto

Spike tacticles ar 15 mil spec lwr recevr

This is not a full auto but it is the best option for converting AR to full auto legally. As a similar receiver, this is also a standard mil-spec form factor. This simply means this will not provide the trigger guard, and easy to install and fit with the upper receiver with just take down pins. 

However, after the fit, there is a little rattle when operating with bullets. It is coated with a hard coat anodized finish that makes it thicker and increases durability. From its look, it has a more matte appearance.

This includes full auto mode and for that, you need few tools and a Federal firearms license (FFL) to make it full auto. It will be a crime if you do this without a proper license. The unit is forged with 7075-T6 aluminum, so make some problems when converting to full auto. 

Lastly, the best ar lower receiver if you want to convert you AR into full auto with proper FFL, and for those who want to experience full auto mode and make it effective. Its cost is quite high but can be used for the best quality.

ITEM DETAILS

  • Cartridge: 223 Remington, 5.56 mm NATO
  • Finish: Matte Black
  • Style: Stripped

5- Seekins Precision SP223 – Best Ambidextrous

Seekins Precision SP223

This is specially designed for both left and right-handed shooters for better control but comes with few cons. This only lower includes left handed bot release. And need to install a fire selector lever to make it functional. 

The trigger guard is enough size for easier access while wearing gloves. The magazine is well flared for faster operation and also have trigger screw to tight trigger fit.

There is a replaceable pin with screw-in pins for increased durability and reliability. The finish is fine and more matte than any other lowers. There is something new in this piece unlike other this receiver is milled from 7075-T6 billet aluminum with low weight category. 

This piece is a little costly, but best if you are a left-handed shooter and for anyone who wants the receiver with more comfort than the standard one.

ITEM DETAILS

  • Cartridge: 223 Remington, 5.56 mm NATO
  • Finish: Matte Black
  • Style: Stripped

6- Battle Arms Development BAD556-LW – Best Lightweight

Battle Arms Development BAD556-LW

This is very simple and lightweight for any ar without dropping performance and a good part for any AR. The BAD556-LW is manufactured from 7075-T6 billet aluminum. Not strong like forged aluminum but durable since there are no moveable parts. Its weight is just 6.84 ounces and one of the lightest receivers in the whole market. 

There is also a magazine well for faster reload, magazine ejector button, and also fire selection mode lever. The guard of the trigger is enough to fit for any finger with all smooth edge and grilled pattern on guard to cut the extra weight. 

For the easier assembly, there is a bolt catch pin and rear pin the detent spring. Also coated with a layer that prevents corrosion. Excellent lower with reduced weight like a need for tactical shooting purposes but can be better like a forged aluminum receiver.

ITEM DETAILS

  • Cartridge: 223 Remington
  • Finish: Black
  • Style: Lightweight, Stripped

7- Radian Weapons Ambidextrous Lower Receiver – Most Complete

Radian Weapons Ambidextrous Lower Receiver

This is the great option for your ar lower it is completely ambidextrous and also includes almost every rifle control. The material used in this is 7075-TG forged aluminum, but the weight is decreased and fir for the magazine very well. 

This is not fully completed piece and magazine ejector, bolt, and firing more switch need to be attached to it. All of these controls are very well placed and ambidextrous

Fir for the right-handed shooters, the magazine chamber is designed to fir the magazine well and easy to eject without taking their firing hand off the weapon, also suit best ar lower for the rifle too. The trigger guard is already integrated for easier access and safety

Also, a self-adjusting receiver that set spring to fit easily in the upper receiver without tightening any screw with a screwdriver. The receiver is quite thin but can be expected as it has no moveable parts do that it may get effected, fits very good finish another receiver. 

Finally, this is the best ar lower receiver its price is quite high but once you will feel comfortable while using this.

ITEM DETAILS

  • Cartridge: 5.56 mm NATO
  • Finish: Black
  • Style: Ambidextrous

How to Choose a Best AR Lower Receiver?

Manufacturing Processes

The huge numbers of the lower receivers are made up of aluminum. Instead of this, there is a lot of option such as steel, titanium, and polymer, but sometimes this quality of product costs a lot. So we’ll only go through the three ways aluminum is made into an AR-15 receiver.

Cast Aluminum

This is a very basic process of casting into any shapes.
Pour the molten aluminum into a mold and, once cooled, you have a lower receiver ready for final finishing and come into action.

Since the aluminum is poured into the cast as a liquid form the final result will have a loosely bounded crystalline structure making it the weakest form than any other type of aluminum. But not that much weak and safe with any fear of non-functioning

Billet Aluminum

In this process, the manufacturer is Michelangelo and the aluminum bars stock in the marble. The lower part starts as a piece of pure aluminum and after molding, it takes various machines to make this into a final finished product and quite strong than the previous process.

It is like forging a piece of metal the advantage of this model is much better. The final aluminum remains solid lower and stronger than cast aluminum finish. Another thing is to customize guns this gives the advantage of manufactures to make it accordingly since it starts with raw aluminum. This allows for increased creativity such as different types of magazines, trigger guards, and something extra to change weight.

Forged Aluminum

The best and ancient way to mold the aluminum, take some piece of aluminum, hammer it into the sheet then again fold it or ad some slabs of aluminum to make and repeat the process until the result obtain. Then a pressure machine press into a final shape and then it gets a finished product. As it is manufactured like a billet lower, the compression creates a less refined lower. This is best for almost every AR-15 so you can use it normally.

Conclusion

Finally, my last suggestion to go for the best product instead of the cheap one. This are important parts so you should not care about the money. If it fits perfectly it will run longer as expected. But keep in mind if you are buying receiver for the bullpup shotguns.

In the case of self-defense. It should be best otherwise no one knows it will work the vulnerable situations or not. So go wisely and I hope this list will help you to choose the best AR.

Happy Hunting!