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AR-15 Gas Tubes – Pistol, Carbine, Mid & Rifle Length
AR-15 Gas Tubes
Precision Gas System Components for Every Build
Shop AR-15 Gas Tubes in All Lengths & Finishes
When it comes to the function of your AR-15, the gas tube is a small but critical component. A high-quality AR-15 gas tube ensures proper cycling, consistent performance, and long-term reliability. Whether you’re building from scratch or upgrading a worn-out system, Mounts Plus has you covered with top-tier gas tubes in pistol, carbine, mid-length, and rifle configurations.
We carry a wide selection from trusted brands like CMC Triggers, Yankee Hill Machine, PRI, ATI, and Aim Sports, in both stainless steel and black nitride finishes — all in stock and ready to ship.
Compare AR-15 Gas Tube Lengths
| Gas System | Tube Length (approx.) | Finish Options | Best For |
|---|---|---|---|
| Pistol | ~6.75" | Stainless, Nitride | AR pistols, short barrels |
| Carbine | ~9.75" | Stainless, Nitride | Standard AR-15 builds |
| Mid-Length | ~11.75" | Stainless, Nitride | Smooth shooting & recoil control |
| Rifle | ~15.125" | Stainless, Nitride | Full-length rifles & DMR setups |
💡 Not sure which gas tube fits your setup? Scroll down for our Gas Tube Length Guide.
Why Upgrade Your AR-15 Gas Tube?
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✅ Reliable Cycling: Avoid short-stroking or over-gassing with a proper-length, quality gas tube
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✅ Match Your Barrel: Choose the correct tube for pistol, carbine, mid, or rifle gas systems
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✅ Better Heat Resistance: Stainless and nitride finishes offer corrosion resistance and long-term durability
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✅ Precision Fit: All gas tubes on our site are mil-spec or better, ensuring compatibility with most AR-15 platforms
Gas Tube Finishes: Stainless vs Black Nitride
| Feature | Stainless Steel | Black Nitride |
|---|---|---|
| Corrosion Resistance | ✅ Excellent | ✅ Superior |
| Appearance | Bright / matte silver | Matte black |
| Heat Resistance | ✅ Very good | ✅ Excellent |
| Price | 💲 Affordable | 💲💲 Slightly more |
Which AR-15 Gas Tube Do You Need?
Choosing the right gas tube depends on your barrel length and intended use. Here's a quick guide:
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Pistol-Length (7–10.5” barrels) → Use pistol gas tube
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Carbine-Length (10.5–16” barrels) → Use carbine gas tube
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Mid-Length (14.5–18” barrels) → Use mid-length gas tube
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Rifle-Length (18”+ barrels) → Use rifle gas tube
Pro Tip: Always pair your gas tube with a compatible low-profile or adjustable gas block for peak performance.
Why Buy from Mounts Plus?
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✅ Trusted AR-15 parts dealer since 1994
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✅ Huge selection of brands, finishes, and sizes
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✅ Fast U.S. shipping from real-time inventory
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✅ Expert support for builds, replacements & upgrades
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✅ Top-rated by law enforcement, builders, and 3-gun shooters
Shop AR-15 Gas Tubes Now
Whether you're tuning a precision rifle, building a home defense setup, or replacing a worn-out component — the AR-15 gas tube is essential for proper cycling and peak performance. Choose from stainless or nitride finishes, select your length, and upgrade your rifle with confidence.
Order today and get fast shipping from the AR pros at Mounts Plus.
Frequently Asked Questions
Q: How do I know which AR-15 gas tube length I need?
A: It depends on your barrel length and gas port placement. Refer to our gas tube length guide above for quick reference.
Q: What’s the difference between stainless and nitride gas tubes?
A: Both are durable. Stainless is corrosion-resistant and budget-friendly; nitride adds superior wear and heat resistance.
Q: Will these gas tubes work with all AR-15s?
A: Yes, all tubes we offer are compatible with mil-spec AR-15 upper receivers and most low-profile gas blocks.
Q: Can I use a carbine gas tube on a mid-length barrel?
A: No. Gas tube and barrel gas port location must match. Mismatched lengths can lead to cycling issues.