AR-15 Gas Tubes – Pistol, Carbine, Mid-Length & Rifle Configurations

Precision Gas Control for Every AR Build

The gas tube is one of the most critical components of your AR-15’s direct impingement gas system. Whether you’re building from the ground up or replacing a worn-out tube, Mounts Plus carries a full range of AR-15 gas tubes in all common lengths and finishes.

Choose from pistol, carbine, mid-length, and rifle gas tubes — all mil-spec compatible, crafted from stainless steel or black nitride, and trusted by law enforcement, competitive shooters, and custom builders alike.

---

📏 Which AR-15 Gas Tube Length Do You Need?

📌 Match the gas tube length to your barrel’s gas port location, not overall barrel length.

---

🧰 AR-15 Gas Tubes by Finish

✅ Stainless Steel Gas Tubes

• Corrosion-resistant

• Budget-friendly

• Perfect for casual range use and standard builds

✅ Black Nitride Gas Tubes

• Superior heat and wear resistance

• Slick surface resists carbon fouling

• Ideal for high-round-count or suppressor-equipped rifles

---

🔩 Top AR-15 Gas Tube Brands We Carry

• CMC Triggers – High-performance nitride-coated tubes

• PRI – Precision gas tubes for match-grade rifles

• YHM (Yankee Hill Machine) – Nitride and stainless in all lengths

• ATI, Aim Sports, DoubleStar, and more…

---

💡 Why Upgrade Your AR-15 Gas Tube?

A high-quality gas tube ensures:

• Consistent cycling

• Improved reliability

• Better gas seal and pressure management

• Less carbon fouling (with nitride coatings)

Upgrading is especially important for:

• Suppressed rifles

• High-temperature SBR use

• Custom tuned gas systems

---

🔧 Installation Compatibility

All gas tubes on this page:

• 🔧 Fit standard AR-15 upper receivers

• ⚙️ Work with low-profile or standard gas blocks

• 🛠 Include roll pins or are compatible with standard pins

• 🧱 Are drop-in ready for your barrel’s port location

---

⭐ Customer Favorites

“Swapped to the CMC nitride mid-length gas tube and the cycling smoothed out instantly. Worth every penny.” – BuilderGreg

“Fast shipping, easy install, and perfect fit under my Aero handguard. PRI’s rifle-length tube is spot on.” – MatchShooter21

---

📦 Why Mounts Plus?

• 🚀 In-stock gas tubes ship fast

• 🔧 All finishes and lengths available

• 🧰 Trusted by military, law enforcement, and competition shooters

• 💬 Real-time support from AR experts

---

❓ FAQs – AR-15 Gas Tubes

Q: How do I know which gas tube length I need?
Measure the distance from your receiver to your barrel’s gas port. Match this with pistol (~6.75"), carbine (~9.75"), mid-length (~11.75"), or rifle (~15.125").

Q: What’s the difference between stainless and nitride gas tubes?
Stainless is cost-effective and corrosion-resistant. Nitride-treated tubes offer superior wear resistance, easier cleaning, and better performance under heat.

Q: Can I use a carbine gas tube with a mid-length barrel?
No. The gas port and tube must match — incorrect length will cause cycling failures or over/under-gassing.

Q: Are all your gas tubes mil-spec?
Yes. Every tube we carry is made to mil-spec standards and compatible with all standard AR-15 components.

---

🛒 Shop AR-15 Gas Tubes Now

Whether you're upgrading your AR-15 gas system, replacing a worn part, or building a new rifle, our gas tubes ensure reliable cycling and precision performance.