AR-15 LOWER RECEIVERS

AR-15 LOWER RECEIVERS

Shop by:

Caliber
Color
Finish
Manufacturer

Products

Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK - BLEM

SALE

Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK - BLEM

Factory BLEMs.

The Aero Precision M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

M4E1 Lower Receiver Improvements:

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly.
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

Includes:

  • Stripped M4E1 Lower Receiver
  • Nylon tipped tensioning set screw
  • Threaded Bolt Catch Pin

APAR600001BC - BLEM

In stock

$59.95

Aero Precision AR15 Stripped Lower Receiver, Gen 2 - BLK

Aero Precision AR15 Stripped Lower Receiver, Gen 2 - BLK

Aero Precision lowers are precision machined to mil-spec dimensions, and work with standard AR15 components to ensure the highest quality with a correct component interface.

Gen 2 Features

  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Increased Magwell Flare - Allows for easier insertion of magazines and provides a sleeker look.

APAR501101C

In stock

$72.00

Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK

Aero Precision AR15 M4E1 Stripped Lower Receiver - BLK

The Aero Precision M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

M4E1 Lower Receiver Improvements:

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly.
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

Includes:

  • Stripped M4E1 Lower Receiver
  • Nylon tipped tensioning set screw
  • Threaded Bolt Catch Pin

APAR600001C

In stock

$99.95

Kinetic Development Group AR-15 5.56mm Enhanced Lower Receiver - STRIPPED

Kinetic Development Group AR-15 5.56mm Enhanced Lower Receiver - STRIPPED

Kinetic Development Group, Semi-automatic, Stripped Lower 223 Rem/556NATO, Black Type 3 Hardcoat Anodized, Flared Machined Magwell, Upper Tension Set Screw Location, HK Style Safety Selector Markings.

KDGARP5-100

In stock

$109.95

Aero Precision AR15 Stripped Ambidextrous Lower Receiver - BLK

Aero Precision AR15 Stripped Ambidextrous Lower Receiver - BLK

Our Ambidextrous Lower Receiver is designed to give you full control from either side, resulting in a versatile firearm for any shooter. Whether you are right or left handed, we've got you covered. Complete this receiver with a Norgon Ambi Catch and a Ambidextrous Safety Selector for full bolt, magazine and safety control from either side. Machined to mil-spec dimensions.

PDQ Ambi-Bolt Release Features:

  • Material: Military grade steel
  • Coating: Matte black hard-coat anodized Mil 8625 Type 3 Class 2
  • Allows user to lock the bolt back as well as send the bolt forward
  • Made in the USA

APAR501102AC

In stock

$159.99

Aero Precision AR15 Stripped Upper/Lower Receiver Set - FDE

Aero Precision AR15 Stripped Upper/Lower Receiver Set - FDE

Upper Receiver Features:

  • Machined from 7075-T6 forged aluminum
  • Coating:FDE Cerakote finish
  • M4 Feedramps
  • .250” takedown pin holes
  • Accepts standard AR15/M16 components

Lower Receiver Features:

  • Machined from 7075-T6 forged aluminum
  • Coating:Magpul™ FDE Cerakote finish
  • Works with standard AR15 components and magazines
  • Rear takedown pin detent hole is threaded for a 4-40 set screw

APCS100008S

In stock

$189.99

Aero Precision M4E1 Carbine Complete Lower Receiver w/A2 Grip - BLK

Aero Precision M4E1 Carbine Complete Lower Receiver w/A2 Grip - BLK

Includes:

  • M4E1 Stripped Lower Receiver - Anodized Black
  • A2 Grip - Black
  • Mil-spec Lower Parts Kit
  • AR15 Carbine Receiver Extension
  • AR15 Carbine Buffer and Spring
  • These parts are installed

APAR600112

In stock

$179.99

Aero Precision M4E1 Upper/Lower Receiver Set - BLK

Aero Precision M4E1 Upper/Lower Receiver Set - BLK

Aero Precision M4E1 Upper and Lower receiver set for the AR15.

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included).
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes
  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks

APCS100177

In stock

$189.99

Aero Precision AR15 Stripped Lower Receiver, Gen 2 - FDE

Aero Precision AR15 Stripped Lower Receiver, Gen 2 - FDE

Aero Precision lowers are precision machined to mil-spec dimensions, and work with standard AR15 components to ensure the highest quality with a correct component interface. FDE Cerakote Finish.

Gen 2 Features

  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Increased Magwell Flare - Allows for easier insertion of magazines and provides a sleeker look.

APAR501302

In stock

$87.99

Aero Precision DTOM AR15 Upper/Lower Receiver Set

Aero Precision DTOM AR15 Upper/Lower Receiver Set

Special Edition Dont Tread on Me AR15 Upper & Lower receiver set.

Forged aluminum upper and lower, Multi caliber, flared magwell and will work with all standard AR15 components and magazines.


APCS100510

In stock

$189.99

Aero Precision DTOM M4E1 Stripped Lower - BLK

Aero Precision DTOM M4E1 Stripped Lower - BLK

Special Edition Dont Tread on Me M4E1 AR15 Stripped Lower Receiver.

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly.
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

APAR600012C

In stock

$109.99

Aero Precision DTOM M4E1 Upper/Lower Receiver Set

Aero Precision DTOM M4E1 Upper/Lower Receiver Set

Special Edition Dont Tread on Me AR15 M4E1 Upper and Lower receiver set.

  • Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included).
  • Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
  • Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
  • New enhanced forging that gives the upper receiver a "billet look"
  • New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes

APCS100512

In stock

$209.99

Aero Precision DTOM M5 Stripped Lower - BLK

Aero Precision DTOM M5 Stripped Lower - BLK

Special edition Dont Tread on Me M5 (.308) Stripped Lower Receiver.

  • Works with standard AR 308 components and magazines
  • Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver.
  • Rear takedown pin detent hole is threaded for a 4-40 set screw
  • Bolt catch is threaded for a screw pin (no roll pin needed)
  • Integrated trigger guard
  • Selector markings will work with 45, 60 or 90 degree safety selectors
  • Accepts Battle Arms Development short throw safety selectors, but will work with any standard selector
  • No gap with aftermarket pistol grips

APAR308015C

In stock

$189.99

Aero Precision M16A4 Clone Lower, 5.56mm

Aero Precision M16A4 Clone Lower, 5.56mm

M16A4 Clone Lower Receiver features custom engraving on our AR15 Gen 2 Lower Receiver and is the perfect base for your M16A4 clone build. These lowers do not have engraving on the right side of the magwell.

Markings include: Property of USA, MOD M16A4, CAL. 5.56MM and has Safe/Semi/Burst safety selector markings

APAR148017C

In stock

$89.99

Aero Precision M4E1 Builders Kit w/ 15" Atlas R-ONE - E Pluribus Unum

Aero Precision M4E1 Builders Kit w/ 15" Atlas R-ONE - E Pluribus Unum

This package deal includes the finished pieces you need to assemble your own E Pluribus Unum M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver and our ATLAS R-ONE M-lok Handguard of choice all finished in E Pluribus Unum. Limited Run!

Includes:

  • M4E1 Threaded Upper Receiver finished in E Pluribus Unum. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15" ATLAS R-ONE M-LOK Handguards finished in E Pluribus Unum (Mounting Kit Included)
  • M4E1 Lower Receiver finished in E Pluribus Unum

APCS100413

In stock

$548.99

Aero Precision M4E1 Builders Kit w/ 15" Atlas R-ONE - Stars & Stripes

Aero Precision M4E1 Builders Kit w/ 15" Atlas R-ONE - Stars & Stripes

This package deal includes the finished pieces you need to assemble your own Stars and Stripes M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver and our ATLAS R-ONE Handguard of choice all finished in Stars and Stripes. The design features a unique design of the American Flag that appears to be waving in the wind as the star-studded canton of our flag leads the way. Limited Run!

Includes:

  • M4E1 Threaded Upper Receiver finished in Stars and Stripes. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15" ATLAS R-ONE M-LOK Handguards finished in Stars and Stripes (Mounting Kit Included)
  • M4E1 Lower Receiver finished in Stars and Stripes

APCS100418

In stock

$548.99

Aero Precision M4E1 Builders Kit w/ 15" Atlas S-ONE - E Pluribus Unum

Aero Precision M4E1 Builders Kit w/ 15" Atlas S-ONE - E Pluribus Unum

This package deal includes the finished pieces you need to assemble your own E Pluribus Unum M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver and our ATLAS S-ONE Handguard of choice all finished in E Pluribus Unum. Limited Run!

Includes:

  • M4E1 Threaded Upper Receiver finished in E Pluribus Unum. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15" ATLAS S-ONE M-LOK Handguards finished in E Pluribus Unum (Mounting Kit Included)
  • M4E1 Lower Receiver finished in E Pluribus Unum

APCS100411

In stock

$548.99

Aero Precision M4E1 Builders Kit w/ 15" Atlas S-ONE - Stars & Stripes

Aero Precision M4E1 Builders Kit w/ 15" Atlas S-ONE - Stars & Stripes

This package deal includes the finished pieces you need to assemble your own Stars and Stripes M4E1 Rifle, including an M4E1 Threaded Upper Receiver, M4E1 Lower Receiver and our ATLAS S-ONE Handguard of choice all finished in Stars and Stripes. The design features a unique design of the American Flag that appears to be waving in the wind as the star-studded canton of our flag leads the way. Limited Run!

Includes:

  • M4E1 Threaded Upper Receiver finished in Stars and Stripes. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • 15" ATLAS S-ONE M-LOK Handguards finished in Stars and Stripes (Mounting Kit Included)
  • M4E1 Lower Receiver finished in Stars and Stripes

APCS100416

In stock

$548.99

AR-15 Lower Receivers

Find the Assembly Parts You Need for Your AR-15 Lower Receiver

Creating a high performance rifle can lead to a preoccupation with acquiring parts. Don’t spend hours on different sites when we have the top quality AR-15 lower receivers and parts you need for inspired building. Gain well-crafted equipment for enthusiasts and pros that can be counted on for a good fit, durable workmanship, and excellent shooting for years. Our line-up of AR-15 lower receivers and parts includes both stripped parts and assemblies. Access forged receivers manufactured from mil-spec, hard coat anodized aircraft grade aluminum. CMMG’s popular lower receiver, stripped for the semi-auto AR15, is made with these materials, and a special coating adds enhanced durability. Look to us for receivers, plus comprehensive parts sets, and field repair kits. Items such as push button pivot pins, trigger assemblies, and hammer pin sets are within our AR-15 parts pages.

Quality AR-15 Lower Receiver Assembly Offers Peak Performance

If you’ve got competition fever, an AR-15 lower receiver assembly comes complete with a collapsible stock and National Match two-stage trigger. Or order a drop-in, match grade modular trigger assembly for your rifle that can be installed in minutes. Prominent names in lower receiver manufacturing can be found on our site, including Rock River Arms, CMMG, DPMS and Stag Arms. If you’re building your own gun, follow the lead of top rifle manufacturers and choose equipment for the long haul. You want a dependable, consistent performer. When it comes to field duty, a forged AR-15 lower receiver assembly shares a robust strength that’s greater than a cast receiver. Our manufacturers, like DPMS, use forged high grade aluminum, anodized to mil-spec, in their lower receiver assemblies. Remember, our rifle section includes exciting choices in AR-15s that are range ready now.