AR15 Lower Parts | Aerospace Arms

Choose from a variety of individual lower parts you may need for your AR15 lower.

Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Light Weight K2, Castle Nut and End Plate, Black and Gray, Anodized Finish

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight Enhanced AR15 End Plate, K1 System (Tapered) Castle Nut, Gold Finish

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight Enhanced AR15 End Plate, K1 System (Tapered) Castle Nut, Black Finish

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., SLS Fifty, Safety Selector, Flat Dark Earth, Matte

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight K1, Castle Nut and End Plate, Black and Gray, Anodized Finish

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Olive Drab Green, Fits AR-15

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Flat Dark Earth, Fits AR-15

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Black, Fits AR-15

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Battle Arms Development

Battle Arms Development, BAD-ASS-LITE, Ambidextrous Safety Selector, 90/60, Lightweight, Reversible, Anodized Finish, Olive Drab Green, Aluminum Construction

Retail:

Was:

Now: $65.00

Currently out of stock, check back later
Radian Weapons

Radian Weapons, Talon Ambidextrous Safety Selector, Red, 2 Lever Kit

Retail:

Was:

Now: $69.95

Add to Cart
LBE Unlimited

LBE Unlimited, Ambi Selector Assembly w/Spring and Detent, Black Finish

Retail: $29.99

Was:

Now: $26.99

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Castle Nut and End Plate, Anodized Black

Retail: $20.95

Was:

Now: $19.90

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Takedown Pin Set, Fits AR-15, Black Nitride Finish

Retail: $22.95

Was:

Now: $21.80

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Light Weight K2, Castle Nut and End Plate, Black and Flat Dark Earth, Anodized Finish

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Light Weight K2, Castle Nut and End Plate, Black, Anodized Finish

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Castle Nut, Anodized Black, Mil Spec

Retail: $11.95

Was:

Now: $11.35

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced Magazine Release, Black Finish

Retail: $7.00

Was:

Now: $6.75

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced AR15 Bolt Catch, Black

Retail: $15.00

Was:

Now: $13.95

Add to Cart
Magpul Industries

Magpul Industries, Enhanced AR Magazine Release, Fits Most 5.56 and 7.62 AR Patterned Rifles, Aluminum Construction, Black

Retail: $19.95

Was:

Now: $18.95

Add to Cart
Magpul Industries

Magpul Industries, MOE Enhanced Trigger Guard, Polymer, Black

Retail: $9.95

Was:

Now: $9.45

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced AR15 Pin Set Kit, Black Finish

Retail: $29.95

Was:

Now: $28.45

Add to Cart
Armaspec

Armaspec, Enhanced Takedown Pins, Black

Retail: $14.99

Was:

Now: $13.49

Add to Cart
Armaspec

Armaspec, B2, Skeletonized Extended Mag Release, FDE Cerakote

Retail: $21.99

Was:

Now: $19.99

Add to Cart
Armaspec

Armaspec, B2, Skeletonized Extended Mag Release, Anodized Black

Retail: $21.99

Was:

Now: $19.99

Add to Cart

Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Light Weight K2, Castle Nut and End Plate, Black and Gray, Anodized Finish

Fortis LE Lightweight Enhanced End Plate with K2 System Castle Nut - Black/Gray (FORTLE-BLK-K2-GRY) Streamline and strengthen your AR-15 lower with the **Fortis LE Lightweight Enhanced End Plate and K2 System Castle Nut** in black/gray anodized finish...

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight Enhanced AR15 End Plate, K1 System (Tapered) Castle Nut, Gold Finish

Fortis LE Lightweight Enhanced End Plate with K1 System Castle Nut - Black/Gold (FORTLE-BLK-K1-GOLD) Streamline and strengthen your AR-15 lower with the **Fortis LE Lightweight Enhanced End Plate and K1 System Castle Nut** in black/gold anodized finish...

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight Enhanced AR15 End Plate, K1 System (Tapered) Castle Nut, Black Finish

Fortis LE Lightweight Enhanced End Plate with K1 System Castle Nut - Black (FORTLE-BLK-K1-BLK) Streamline and strengthen your AR-15 lower with the **Fortis LE Lightweight Enhanced End Plate and K1 System Castle Nut** in black anodized finish. This...

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., SLS Fifty, Safety Selector, Flat Dark Earth, Matte

Fortis SLS Fifty Ambidextrous Safety Selector - Flat Dark Earth (SLS-50-FDE) Upgrade your AR-15, AR-10, or modern rifle build with the Fortis SLS Fifty Ambidextrous Safety Selector in rugged Flat Dark Earth. Engineered for reliability and performance,...

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Lightweight K1, Castle Nut and End Plate, Black and Gray, Anodized Finish

Fortis LE Lightweight Enhanced End Plate with K1 System Castle Nut - Black/Gray (LE-BLK-K1-GRY) Streamline and strengthen your AR-15 lower with the Fortis LE Lightweight Enhanced End Plate and K1 System Castle Nut in black/gray anodized finish. Designed...

Retail: $39.95

Was:

Now: $37.95

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Olive Drab Green, Fits AR-15

Fortis Billet Magazine Catch & Release Button Combo - Olive Drab Green (AR15-BMCR-ODG) Elevate your AR-15 or AR-10 lower with the Fortis Billet Magazine Catch & Release Button Combo in tactical Olive Drab Green (ODG). This precision upgrade...

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Flat Dark Earth, Fits AR-15

Fortis Billet Magazine Catch & Release Button Combo - Flat Dark Earth (AR15-BMCR-FDE) Give your AR-15 or AR-10 lower the premium edge with the Fortis Billet Magazine Catch & Release Button Combo in Flat Dark Earth (FDE). This billet upgrade swaps...

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Inc., Billet Magazine Catch and Release, Nitride Finish, Black, Fits AR-15

Fortis Billet Magazine Catch & Release Button Combo - Black (AR15-BMCR-BLK) Instantly level up your AR-15 or AR-10 lower with the Fortis Billet Magazine Catch & Release Button Combo in classic black. This precision billet upgrade replaces...

Retail: $24.95

Was:

Now: $23.70

Add to Cart
Battle Arms Development

Battle Arms Development, BAD-ASS-LITE, Ambidextrous Safety Selector, 90/60, Lightweight, Reversible, Anodized Finish, Olive Drab Green, Aluminum Construction

Battle Arms Development BAD-ASS-LITE Lightweight Ambidextrous Safety Selector - Olive Drab Green (BAD-ASS-LITE-ODG) Lighten up and level up your AR-15 or AR-10 lower with the Battle Arms Development BAD-ASS-LITE Ambidextrous Safety Selector in tactical...

Retail:

Was:

Now: $65.00

Currently out of stock, check back later
Radian Weapons

Radian Weapons, Talon Ambidextrous Safety Selector, Red, 2 Lever Kit

The Talon ambidextrous safety selector is a modular design that can be installed as a standard 90 degree or as a 45 degree short throw by simply rotating the shaft 180 degree inside the lower receiver. Selector levers install using a precision machined...

Retail:

Was:

Now: $69.95

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LBE Unlimited

LBE Unlimited, Ambi Selector Assembly w/Spring and Detent, Black Finish

The LBE ambidextrous selector assembly comes with a selector spring, detent and Hex wrench. Made in the USA.

Retail: $29.99

Was:

Now: $26.99

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Fortis Manufacturing, Inc.

Fortis Manufacturing, Castle Nut and End Plate, Anodized Black

The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you're trying to save ounces, this is a great way, but without sacrificing durability...

Retail: $20.95

Was:

Now: $19.90

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Fortis Manufacturing, Inc.

Fortis Manufacturing, Takedown Pin Set, Fits AR-15, Black Nitride Finish

The Fortis Enhanced Pins Set features a drill through design to keep the weight low without sacrificing rigidity. Manufacturing it out of 17-4 stainless steel allows Fortis to balance between form and function. This enhanced set is machined with...

Retail: $22.95

Was:

Now: $21.80

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Fortis Manufacturing, Inc.

Fortis Manufacturing, Light Weight K2, Castle Nut and End Plate, Black and Flat Dark Earth, Anodized Finish

When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Light Weight K2, Castle Nut and End Plate, Black, Anodized Finish

When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a...

Retail: $44.95

Was:

Now: $42.70

Add to Cart
Fortis Manufacturing, Inc.

Fortis Manufacturing, Castle Nut, Anodized Black, Mil Spec

The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you're trying to save ounces, this is a great way, but without sacrificing durability...

Retail: $11.95

Was:

Now: $11.35

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced Magazine Release, Black Finish

Precision CNC Machined for billet 7075-T6 Aluminum (not 6061) in an anodized BLACK finish, the BAD-EMR features an unique, fully solid "V" shaped button face with horizontal serrations (no thru hole). The concave V-Groove button face offers excellent...

Retail: $7.00

Was:

Now: $6.75

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced AR15 Bolt Catch, Black

The Battle arms development EBC (enhanced bolt catch) was designed to be a drop-in upgrade to the existing MIL-SPEC bolt catch. Due to the design of this bolt catch, it provides not only a better purchase on the release portion but the lock portion of...

Retail: $15.00

Was:

Now: $13.95

Add to Cart
Magpul Industries

Magpul Industries, Enhanced AR Magazine Release, Fits Most 5.56 and 7.62 AR Patterned Rifles, Aluminum Construction, Black

The Magpul AR Enhanced Magazine Release provides an enlarged contact surface for quick and fumble free magazine changes. With easy bolt-on installation with no gunsmithing required, the Enhanced AR Magazine Release is made of Mil-Spec hard anodized...

Retail: $19.95

Was:

Now: $18.95

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Magpul Industries

Magpul Industries, MOE Enhanced Trigger Guard, Polymer, Black

The MOE (Magpul Original Equipment) Enhanced Trigger Guard is a polymer drop-in replacement for the AR15 / M4 weapons platform. This upgraded trigger guard is easily installed without the use of specialized tools, using two set screws to secure it to the...

Retail: $9.95

Was:

Now: $9.45

Add to Cart
Battle Arms Development

Battle Arms Development, Enhanced AR15 Pin Set Kit, Black Finish

Established in 2009, Battle Arms Development, Inc. (B.A.D. Inc.) stands as a distinguished force in the realm of small arms innovation. Nestled in the heart of Henderson, Nevada, their company is driven by a relentless commitment to pushing the...

Retail: $29.95

Was:

Now: $28.45

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Armaspec

Armaspec, Enhanced Takedown Pins, Black

These enhanced takedown/pivot pins are made of steel and black nitride, they come with several enhancements for easy installation and operation. A convex head so it can be tapped from any angle. An extended concave tip for easy removal using any flat or...

Retail: $14.99

Was:

Now: $13.49

Add to Cart
Armaspec

Armaspec, B2, Skeletonized Extended Mag Release, FDE Cerakote

The Armaspec B2 is a skeletonized extended magazine release designed to extend the length of the factory button. The B2 makes it easier to release the magazine without changing the grip position. Features and Specifications: Material: Aluminum Finish:...

Retail: $21.99

Was:

Now: $19.99

Add to Cart
Armaspec

Armaspec, B2, Skeletonized Extended Mag Release, Anodized Black

The Armaspec B2 is a skeletonized extended magazine release designed to extend the length of the factory button. The B2 makes it easier to release the magazine without changing the grip position. Features and Specifications: Material: Aluminum Finish:...

Retail: $21.99

Was:

Now: $19.99

Add to Cart