TacFire Unassembled AR15 16" Rifle Build Kit

$344.99
Strike Lower Parts Kit, Si Ar-e-lrplt Ar Enhance Lpk

$53.95
Wilson Combat Lower Parts Kit, Wils Trlowerk Lower Parts Kit Ar

$49.95
Strike Lower Parts Kit, Si Ar-e-lrpth Ar Enhance Lpk W/trig

$75.95

AR15 Lower Build Kits & Parts Kits

AR15 Lower Build Kits and Parts Kits are essential components for enthusiasts and builders who wish to assemble or customize their rifles.

These kits are designed to provide the necessary parts for the lower receiver of the AR15, which is the portion of the firearm that includes the firing mechanism, magazine well, and buttstock attachment point, among other critical functions.

AR15 Lower Build Kits

AR15 Lower Build Kits typically encompass all the parts needed to fully assemble the lower receiver.

These kits often include the trigger assembly, hammer, safety selector, magazine release, bolt catch, and all necessary pins and springs. Depending on the specific kit, AR Lower Build Kits may also include a pistol grip and buttstock.

These kits are designed for both novice and experienced builders and offer a comprehensive set of components that ensure compatibility and ease of assembly.

AR15 Parts Kits

AR15 Parts Kits, while similar to Build Kits, can vary in the range of components they include.

Some AR Parts Kits may offer a more focused selection of components, such as just the parts for the trigger assembly or a specific set of springs and detents.

These kits are ideal for shooters looking to upgrade or replace specific parts of their lower receiver rather than assembling a new one from scratch.

Popular AR Parts Kit Brands

Aero Precision
Renowned for precision engineering, Aero Precision provides comprehensive lower build kits and parts kits that are favored for their fit, finish, and reliability.

Bravo Company USA (BCM)
BCM is highly regarded in the tactical community for their AR-15 components, including lower parts kits that enhance durability and performance.

Daniel Defense
Known for their premium firearms, Daniel Defense also offers high-quality lower build kits and parts kits that are designed for superior functionality and longevity.

Geissele Automatics
Geissele is synonymous with excellence in trigger systems but also provides top-notch parts kits for AR-15 lowers, emphasizing precision and reliability.

CMMG, Inc.
CMMG offers innovative AR-15 lower parts kits and build kits, including their popular color-coded kits that simplify the assembly process for beginners and experienced builders alike.

Anderson Manufacturing
Anderson Manufacturing provides affordable yet reliable AR-15 lower build kits and parts kits, making them a popular choice for budget-conscious builders who don't want to sacrifice quality.

Spike's Tactical
Spike's Tactical is known for their themed and high-quality AR-15 lower parts kits, offering unique aesthetics alongside dependable performance.

Magpul Industries
While primarily famous for their magazines and furniture, Magpul's MOE (Magpul Original Equipment) kits for AR-15 lowers include quality components that enhance ergonomics and usability.