AR-15 Stocks for Sale

Adjustable Stocks for the AR-15 Platform

A collapsible buttstock permits length-of-pull adjustment to accommodate body armor, heavy outerwear, or different shooters using the same rifle. The mechanism slides along a mil-spec or commercial buffer tube and locks at preset positions. Our 6-position collapsible stock kit ships as a complete assembly with buffer, spring, and tube ready to install on any standard lower receiver.

Six-Position Collapsible Stocks

The standard configuration provides six locking detents along the buffer tube, ranging from fully collapsed for storage to fully extended for prone shooting. Most defensive carbine builds and competition rifles use this design because it adapts to a range of shooting positions without tools.

Mil-Spec Versus Commercial Diameter

Mil-spec buffer tubes measure 1.146 inches in outside diameter while commercial tubes measure 1.168 inches. Stocks designed for one specification will not properly fit the other, so verify the tube diameter before ordering a replacement assembly. Our AR-15 buffer tube kit follows mil-spec dimensions for compatibility with the broadest range of aftermarket stocks.

PDW and Minimalist Designs

Personal defense weapon stocks compress to a shorter overall length than standard six-position assemblies, which suits short-barreled rifles and pistol-configured firearms. Minimalist stocks remove the cheek riser and storage compartments, reducing weight to under eight ounces in many cases.

Buffer Tube Compatibility

Adjustable stocks require a properly threaded receiver extension along with a castle nut, end plate, buffer, and recoil spring. The AR-10 buffer tube kit covers .308-pattern builds where the buffer dimensions differ from the standard AR-15 specification.

Fixed Rifle Stocks and Precision Configurations

Fixed stocks deliver a rigid, single-piece interface between the shooter and the rifle, eliminating the small amount of play inherent in any adjustable mechanism. Builders pursuing the highest mechanical accuracy or assembling A2-pattern service rifle clones generally select this option.

A2 Fixed Rifle Stocks

The classic A2 stock pairs with a rifle-length buffer tube to produce the original M16A2 configuration. The longer length of pull suits taller shooters and prone marksmanship positions. Our A2 fixed rifle-length kit for AR-15 includes the buffer tube, buffer, and spring matched to the stock body.

Precision and Target Stocks

Precision-pattern stocks add adjustable cheek risers and length-of-pull spacers while retaining the rigid mounting characteristic of a fixed design. The configuration suits dedicated marksman builds and bench rest applications where consistent shoulder placement determines group size.

.308 and Large-Frame Fixed Stocks

Large-frame AR rifles chambered in .308 Winchester require a longer buffer and corresponding stock assembly. The A2 fixed stock kit for .308 builds provides the correct geometry for DPMS and SR-25 pattern lower receivers.

Storage Compartments

Many fixed and adjustable stocks incorporate hollow internal cavities sealed by a sliding hatch or trapdoor. These compartments accept cleaning supplies, batteries for optics, or small repair tools, keeping essential items with the rifle.

Why Choose AR15Parts.com?

AR15Parts.com has supplied the firearm building community since 2003. Our facility in Denison, Texas processes orders the same business day when they arrive before the cutoff time. Components are inspected against specification before they ship.

Here is what differentiates the operation:

• Same-Day Shipping: Orders placed before 3:00 PM Central Time leave Denison on the same business day.
• Mil-Spec Verification: Every buffer tube and stock assembly is checked for proper threading and diameter before packaging.
• Direct Phone Support: Calls reach a representative familiar with build compatibility, not an automated menu.
• Inventory Transparency: Listed quantities reflect what sits on the shelf in the Texas warehouse.

Complementary Components for Your Build

A stock replacement frequently coincides with related upgrades to the lower receiver group, particularly when changing buffer weights or recoil spring rates. Pairing a new stock assembly with matched lower parts produces consistent function across the entire rifle.

Here are the related categories carried by AR15Parts.com:

• AR Uppers

• Barrels

• Bolt Carrier Groups

• Charging Handles

• Clearance

• Handguards

• Lower Parts

• Magazines

• Muzzle Devices

• Rifles

• Upper Receivers

Order Your AR-15 Stock Today

AR15Parts.com ships adjustable, fixed, and PDW-style stock assemblies from our Denison facility throughout the lower 48 states. Inventory updates in real time so the listed quantity reflects current shelf stock.

Place your order online or speak with a representative regarding buffer tube diameter, length of pull, or large-frame compatibility. Contact AR15Parts.com for build consultations.

Frequently Asked Questions