Description
The Bootleg Rifle Length Gas Tube is one of those small parts that does a big job. It carries the gas tapped off your barrel back to the bolt carrier group, and when it's the right length and built right, you never think about it again. That's exactly what you want from a gas tube. This one is cut for a rifle-length gas system, which runs right around 15 inches and is meant for the longer barrels you'll find on 18 to 20 inch builds.
Bootleg makes it from stainless steel with a bright silver finish, so it holds up to the heat and pressure that a gas system sees shot after shot. The bare stainless look is a nice touch if you're going for a classic rifle profile or want the tube to show through an open handguard. It's a straightforward, well-made piece from a company that focuses on AR-15 and AR-10 components for builders.
Matching the Bootleg Rifle Length Gas Tube to Your Barrel
Getting the gas system length right is the whole game here. A rifle-length setup pairs with barrels in the 18 to 20 inch range, where the longer dwell time gives you a smoother cycle, softer recoil impulse, and less wear on your internals. Run it on the wrong barrel length and you'll fight cycling problems, so measure your gas port location before you order. If your barrel is spec'd for a rifle-length gas system, this tube is the match.
Building With the Bootleg Rifle Length Gas Tube
The tube comes with the roll pin that secures it to your gas block, so you're not hunting for extra hardware mid-build. Installation is standard stuff: pin it into the gas block, slide it through the barrel nut and into the upper receiver's gas key channel, and you're set. Whether you're finishing a fresh upper or swapping out a tired tube, it's a clean, no-drama part that just works.
Key Specifications
- Manufacturer: Bootleg
- Manufacturer Part Number: BP-GTR-S
- UPC: 850008671104
- Product Type: Gas Tube
- Gas System Length: Rifle Length
- Approximate Length: About 15 inches
- Material: Stainless Steel
- Color / Finish: Silver
- Fits: AR-15 (also AR-10 with matching rifle-length gas system)
- Recommended Barrel Length: 18 to 20 inches
- Roll Pin Included: Yes
What’s Included
- Bootleg Rifle Length Gas Tube (Silver)
- Gas tube roll pin
Frequently Asked Questions
What barrel length does the Bootleg Rifle Length Gas Tube work with?
A rifle-length gas system is built for longer barrels, generally in the 18 to 20 inch range. The longer dwell time on those barrels gives you a smoother, softer cycle. If your barrel's gas port is spaced for a rifle-length system, this is the tube you want.
Does this gas tube come with a roll pin?
Yes. The roll pin that pins the tube to your gas block is included in the package. That's the small hardware people commonly forget, so it's nice to have it in the box.
Can the Bootleg Rifle Length Gas Tube be used on an AR-10?
It can, as long as the gas system length on your AR-10 barrel matches a rifle-length tube. Gas tubes are sized by system length rather than caliber, so the deciding factor is your barrel's gas port location and not whether it's an AR-15 or AR-10.
Why choose a silver stainless gas tube over a black one?
It comes down to looks and heat resistance. Stainless holds up well to the heat and pressure of the gas system, and the bright silver finish suits a classic rifle build or an open handguard where the tube shows. Performance is the same as a nitride black version; the finish is the difference.






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