AR-15 Lower Parts & Components For Sale

AR15Parts.com stocks individual lower components for AR-15 and AR-10 builds, shipping from our Denison, Texas warehouse. Our catalog includes buffer tube kits, takedown and pivot pins, ambidextrous safety selectors, and trigger and hammer pin sets for builders who need specific parts.

AR-15 Buffer Tube Kits

A buffer tube kit provides everything needed to mount a collapsible stock on a mil-spec lower receiver. Our 6-position assemblies include the buffer tube, buffer, buffer spring, end plate, and castle nut. Kits are available in both AR-15 and AR-10 configurations.

AR-15 6-Position Buffer Tube Kits

Standard mil-spec 6-position buffer tube kits work with any collapsible AR-15 stock and provide the full range of length-of-pull adjustment. Compatible with nearly every mil-spec AR-15 lower receiver on the market.

AR-10 6-Position Buffer Tube Kits

AR-10 buffer tube kits use the same 6-position design scaled for LR-308 and DPMS-pattern receivers. Builders completing an AR-10 lower will find these kits provide reliable function matched to the platform.

Takedown & Pivot Pins

Takedown and pivot pins secure the upper and lower receivers together and allow the rifle to be field-stripped for cleaning and maintenance. Our extended pin sets feature an enlarged head for tool-free disassembly.

AR-15 Extended Takedown & Pivot Pins

Extended takedown and pivot pins for AR-15 lowers drop in without modification and work with the existing detent and spring. The enlarged head makes field-stripping faster compared to standard military-style pins.

AR-10 Extended Takedown & Pivot Pins

AR-10 extended takedown and pivot pins bring the same tool-free convenience to DPMS-pattern and LR-308 lowers. Available in black finish to match most lower receiver anodizing.

Ambidextrous Safety Selectors

An ambidextrous safety selector allows both left- and right-handed shooters to engage and disengage the safety from either side of the receiver. Our selectors fit both AR-15 and AR-10 mil-spec lowers and install without receiver modification.

Ambidextrous Safety Selector Compatibility

Our ambidextrous safety selectors include both left- and right-hand levers along with the selector detent. They are compatible with mil-spec AR-15 and AR-10/LR-308 lower receivers and finished in matte black.

Trigger & Hammer Anti-Walk Pin Sets

Anti-walk trigger and hammer pin sets prevent pin migration during firing. This is especially important in builds running drop-in trigger modules, which can accelerate pin movement compared to standard mil-spec triggers. Available in black and stainless finishes.

Black Anti-Walk Pin Sets

Black trigger and hammer anti-walk pins deliver standard mil-spec appearance with reliable pin retention for AR-15 and AR-10/LR-308 receivers.

Stainless Anti-Walk Pin Sets

Stainless trigger and hammer pin sets provide the same anti-walk function with added corrosion resistance and a finish that contrasts against black receiver anodizing.

Why Choose AR15 Parts for Lower Components

We supply individual lower parts for builders who need specific components rather than a complete assembly. Our Texoma warehouse stocks both AR-15 and AR-10 platform parts with nationwide shipping from Denison, Texas.

Component-Level Selection: Buy the exact part you need without overpaying for a complete kit when you already have most of it.
Dual Platform Compatibility: Many of our lower parts fit both AR-15 and AR-10/LR-308 receivers. Compatibility is listed on each product page.
Fast Shipping: Orders ship from our North Texas warehouse, shortening transit times for builders across the region.
Knowledgeable Support: Our staff can confirm compatibility with your specific lower receiver before you purchase.

Browse Our Other AR-15 Categories

Builders rarely complete a rifle with one category of parts alone, and we stock the full range of components needed for any AR-15 project. Here are the other categories available at our Denison, Texas store:

Order Your AR-15 Lower Parts Today

Our Denison warehouse holds buffer tube kits, pins, safety selectors, and trigger and hammer pin sets ready to ship anywhere in the country. Contact AR15 Parts for questions about compatibility or to confirm current stock.

Frequently Asked Questions

What AR-15 lower parts are available at AR15Parts.com?

Our lower parts catalog includes buffer tube kits, takedown and pivot pins, ambidextrous safety selectors, and trigger and hammer anti-walk pin sets for both AR-15 and AR-10 platforms. All parts ship from our Denison, Texas warehouse.

What is included in an AR-15 buffer tube kit?

A 6-position buffer tube kit includes the buffer tube, buffer, buffer spring, end plate, and castle nut needed to complete a mil-spec collapsible stock assembly.

What is the difference between standard and extended takedown pins?

Extended takedown and pivot pins feature an enlarged head that makes field-stripping faster without tools, while standard pins require pressing the detent with a punch. Extended pins are a popular upgrade for builders who frequently disassemble their rifle.

Are these lower parts compatible with AR-10 platforms?

Several components in our catalog, including the ambidextrous safety selector and trigger and hammer anti-walk pin sets, are compatible with both AR-15 and AR-10/LR-308 platforms. Each product listing specifies compatibility.

What do anti-walk trigger and hammer pins do?

Anti-walk trigger and hammer pins prevent the pins from migrating under recoil, which can cause malfunctions in standard AR-15 lowers. They are especially recommended for builds using drop-in trigger modules or accumulating high round counts.

Does AR15Parts.com ship lower parts nationally?

Yes, we ship lower parts nationwide from our Denison, Texas warehouse. Standard lower components are not restricted and ship as ordinary firearm parts to all US addresses.