What’s the difference between mil-spec and commercial AR-15 buttstocks?

Mil-spec buttstocks fit tighter and are more standardized, while commercial stocks have a slightly larger tube diameter. Be sure your buffer tube matches the stock you choose.

Can I use any AR-15 buttstock with my rifle?

You can use any AR-15 buttstock that matches your buffer tube type — either mil-spec or commercial. Always verify compatibility before installing.

What type of AR-15 stock is best for home defense?

A lightweight, adjustable or collapsible stock is ideal for home defense. It offers maneuverability and quick shouldering in close quarters.

Are fixed stocks better for long-range shooting?

Yes. Fixed stocks provide greater stability and consistent cheek weld, which is especially important for precision and long-range shooting setups.

What brands of AR-15 stocks do you carry?

We carry AR-15 stocks from Magpul, B5 Systems, Daniel Defense, Hera Arms, and more — all trusted brands known for quality and reliability.

AR Buttstock | Adjustable & Fixed AR-15 Stocks

**Magpul MOE Fixed Carbine Stock (Mil-Spec)** $33.20

**Magpul MOE Fixed Carbine Stock (Commercial)** $33.20

**Magpul PRS Gen 3 Precision-Adjustable Stock for AR15 & AR10 (Mil-Spec Carbine & Rifle Tube)** $242.20

**Back-up 20 buttstock, securely stores 20-round magazine for back-up use, replaces standard M16A2 or** $197.55

**Back-up 20 complete buttstock installation kit, includes buffer, buffer tube, spring, stock extensio** $237.45

**Aim Sports Mil-Spec M4 Stock - US Made AR-15 Stock** $14.95

**Magpul PRS Lite - AR-15 Stock** $113.94

**EGW Whitley Space Stock, Adjustable AR-15 Stock** $250.00

**Seekins Precision ProComp 10X AR Stock** $159.00

**B5 Systems Collapsible Precision Stock (CPS) - Long AR Stock** $230.00

**B5 Systems Collapsible Precision Stock (CPS) - Short AR Stock** $225.00

**B5 Systems Collapsible Precision Stock (CPS) - Medium AR Stock** $225.00

**Hera Arms HRS AR-15 Fixed Buttstock - AR Stock** $59.90

**Hera Arms CQR AR-15 Stock System - Black** $119.00

**Hera Arms HRS Light Fixed AR15 Buttstock - AR Stock** $59.90

**Hera Arms CQR Gen 2 AR-15 Buttstock - Black** $129.00

**CMMG AR15 A1 Receiver Extension and Stock Kit** $99.95

**VISM Modular Precision Buttstock - Mil-spec AR Stock** $129.99

**Daniel Defense AR-15 Collapsible Stock - Mil-spec Black** $82.00

AR-15 Buttstocks – Find the Perfect Fit for Your Rifle Build

Your AR-15 is only as good as the stock it’s built on. Whether you're building your first rifle or upgrading a current setup, choosing the right AR-15 buttstock makes a huge difference in stability, comfort, and overall shooting performance.

At Mounts Plus, we carry a handpicked selection of adjustable, fixed, and lightweight buttstocks designed to fit mil-spec and commercial buffer tubes. We stock industry-leading brands like Magpul, B5 Systems, Hera Arms, Mission First Tactical, and more — all trusted by professionals, enthusiasts, and operators alike.

🔍 Which AR-15 Stock Is Right for You?

Not all builds are the same. Your choice of buttstock should match your intended use, whether it's tactical, precision, or range shooting. Here’s a quick breakdown:

✔️ Adjustable / Collapsible Stocks
Perfect for tactical or home defense rifles. These stocks let you change the length of pull to fit your body, gear, or shooting position.

✔️ Fixed Stocks
Preferred for long-range or benchrest shooters. A fixed stock offers rock-solid consistency, which is ideal when stability matters most.

✔️ Minimalist / Lightweight Stocks
Slim, sleek, and simple. These are excellent for SBRs, truck guns, or anyone trying to shed weight without losing durability.

🔧 Mil-Spec vs Commercial AR-15 Buttstocks

Before you buy, make sure your buffer tube type matches the stock.

Mil-spec buffer tubes have a smaller diameter and tighter fit — standard for military and most modern AR builds.
Commercial tubes are slightly larger and need matching commercial-fit stocks.
If you're unsure, check your existing setup or reach out — our team is happy to help.

🏆 Shop AR-15 Stocks from the Top Brands

Magpul MOE & CTR – Lightweight, rugged, and mission-ready
B5 Systems SOPMOD – Military-grade ergonomics and cheek weld
Hera Arms – German-engineered precision with a tactical edge
Mission First Tactical – Affordable, American-made performance
Daniel Defense & More – Battle-proven, field-tested reliability

Complete Your AR-15 Build with These Compatible Accessories

Pair your buttstock with a durable AR-15 buffer tube kit to ensure a secure and smooth installation.
Add more control and shoulder comfort by installing a recoil pad compatible with your AR-15 stock.
Improve your cheek weld and optic alignment with a precision-fit cheek riser or pad for AR-15 platforms.
Don’t forget to check out our wide range of AR-15 pistol grips to upgrade ergonomics and shooting comfort.
Browse all essential AR-15 accessories to complete and personalize your rifle build.

🙋 Frequently Asked Questions

Q: What’s the difference between mil-spec and commercial buttstocks?
A: Mil-spec stocks fit tighter and are built to a military standard diameter (1.14"). Commercial stocks are slightly larger (1.17") and require matching tubes. Fit matters — make sure to check before you buy.

Q: Can I install a new stock without tools?
A: Most adjustable buttstocks can be installed without tools as long as you already have the buffer tube in place. Fixed stocks may require a simple screwdriver or hex key.

Q: Which AR-15 stock is best for home defense?
A: A collapsible or minimalist stock is great for maneuverability in tight spaces. Look for lightweight options with anti-slip recoil pads.

Q: Are fixed stocks legal on all AR-15s?
A: Yes, fixed stocks are legal — but be sure to check your local regulations, especially if you're building a rifle with a short barrel.

Q: Will these buttstocks work with AR-10 rifles?
A: Many stocks are interchangeable, but compatibility depends on your buffer tube and receiver extension. Always check specifications or reach out to our team for advice.

🛒 Build a Better Rifle with the Right AR Stock

Whether you're going for tactical speed or precision accuracy, the right AR-15 buttstock helps you shoot better, faster, and more comfortably. Browse our full selection and find the stock that matches your needs, your gear, and your style.