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The Luth-AR GB-FIX is a precision alignment and installation fixture built to solve one of the most aggravating parts of an AR build: getting the gas tube pinned into the gas block without bending, buggering, or misaligning anything. It cradles the gas block and gas tube in the correct position so the roll pin hole lines up right where it needs to, letting you drive the pin home with confidence instead of wrestling parts with a pair of needle-nose pliers and a prayer.
Anybody who has pinned a low-profile gas block by hand knows the drill. The roll pin is tiny, the surfaces are rounded, and one careless tap can crush a tube or leave you with a crooked pin that fouls the bolt carrier. This fixture holds everything steady on the bench, so your punch strikes go where they should and the tube stays true. That means fewer ruined gas tubes and a gas system that lines up with the gas port the first time.
This is the kind of tool that pays for itself the first time it saves a gas tube. It speeds up roll pin installation, cuts down the risk of damage during assembly, and takes the eyeballing out of alignment. Whether you are building one rifle a year or a dozen a week, it makes the job faster and a lot less frustrating.
The GB-FIX is reusable and made in America, so it holds up build after build. It is right at home on a gunsmith's bench and just as friendly for the DIY builder working on a home AR project. Pair it with a proper pin punch and a light gunsmithing hammer and you have everything you need to get the gas system squared away.
If you build AR-15 or AR-style rifles and want your gas systems aligned right without the headache, the GB-FIX is one of those quiet workhorse tools you will reach for every time.
The GB-FIX is an alignment and installation fixture that holds your gas block and gas tube in the correct position while you drive the roll pin. It keeps the roll pin holes lined up so the tube goes in straight and the pin seats cleanly. That takes the guesswork and the risk of damage out of pinning your gas system.
Yes, the fixture handles alignment and holding, but you will still want a proper roll pin punch and a small gunsmithing hammer to drive the pin. Many builders also keep a light dab of blue thread locker on hand for the gas block set screws. A padded clamp to hold the fixture to your bench makes the job even easier.
The fixture is designed to align standard AR gas blocks and gas tubes for pinning, which covers the common low-profile styles used on most builds. Because gas blocks vary in shape and size between brands, it is worth confirming your specific block fits the fixture. For the vast majority of standard AR-15 gas systems, it does the job well.
Pinning a gas tube by hand is one of the fiddliest steps in an AR build, and a crushed tube or crooked pin can set you back. Even for a single build, the GB-FIX saves headaches and helps you get the alignment right the first time. It is reusable too, so it stays in your kit for the next project.
| UPC | 812058033677 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GBFIX |
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