The gas tube below the barrel was extended to the full length of the weapon to vent the gas outside the vehicle.

This piston is located inside the gas tube.

While Tom looked, Rand brought up the gas tube and put it to the new hole.

The gas tube at the forward end of the handguard is double-ended to accommodate the two rods.

Another common surge protection device is a gas discharge arrestor, or gas tube.

The gas collecting tube is weighed for a third and last time containing the liquid yielding the value .

Now fill the gas collecting tube with the fluid to be investigated.

Some of these rifles may exhibit canted front sight blocks and gas tubes.

Probably the gas tube was getting fouled; he'd put a bunch of rounds through the damned thing.

As the stainless metal could not be parkerized, the gas tubes were given a stove-blackening that frequently wore off in use.