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AR 15 Collapsible Stock – Adjustable, 6-Position, Mil-Spec & Tactical

An AR 15 Collapsible Stock is one of the most effective upgrades you can make to your AR-15 rifle. Whether you're setting up for tactical versatility, home defense, or range precision, Mounts Plus offers a full selection of mil-spec, commercial, and 6-position AR-15 stocks from top brands including Magpul, FAB Defense, ATI, VISM, and more.

These stocks combine comfort, control, and customization in a lightweight, adjustable platform—perfect for adapting to different shooters and situations.

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✅ Why Choose a Collapsible Stock for Your AR 15?

The collapsible stock is designed to optimize your shooting experience by allowing:

• 🔧 6-position adjustability for ideal length of pull

• 🧱 Compact storage and transport

• 🔩 Fast shoulder transitions and recoil management

• 🛠️ Easy installation on mil-spec or commercial buffer tubes

• 🎯 Enhanced ergonomics and stability under recoil

Whether you're running drills, defending your home, or hunting hogs, a quality AR 15 collapsible stock makes a difference.

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📊 Compare the Best AR 15 Collapsible Stocks

All AR 15 collapsible stocks are in stock and ship fast from our U.S. warehouse.

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🔩 Stock Compatibility Guide

Mil-Spec vs. Commercial Buffer Tubes

Mil-Spec:

• Diameter: 1.14”

• Tighter tolerances

• Most aftermarket AR stocks are mil-spec compatible

Commercial:

• Diameter: 1.17”

• Slanted back end

• Some budget stocks and OEM tubes use this standard

Always match your stock type to your buffer tube size for proper fit.

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🛠 Installation is Fast & Easy

1. Remove your old stock (if present)

2. Slide the new AR 15 collapsible stock onto the buffer tube

3. Adjust to your preferred position

4. Test for stability and function

No gunsmithing required—just basic tools and a few minutes.

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❓ FAQs About Collapsible AR 15 Stocks

What is a collapsible stock for AR 15 rifles?

It’s an adjustable buttstock that allows you to change the length of pull, making your rifle more adaptable for different shooters and scenarios.

Are AR 15 collapsible stocks legal?

Yes, for rifles. However, collapsible stocks on pistols or short-barreled rifles (SBRs) may be regulated under the NFA. Always follow your state and federal laws.

Can I use a commercial stock on a mil-spec tube?

No. Mil-spec and commercial stocks are not interchangeable. Confirm your buffer tube spec before purchasing.

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🛒 Shop AR 15 Collapsible Stocks at Mounts Plus

Mounts Plus is your trusted destination for top-quality AR 15 collapsible stocks. We offer:
✅ Leading brands like Magpul, ATI, FAB Defense
✅ Tactical, lightweight, and compact stock options
✅ Mil-spec and commercial compatibility
✅ Fast shipping and easy returns
✅ Trusted by law enforcement, military, and civilian shooters