How does it work?

During every shot which is fired from a standard barrel, the bullet powder usually continues to burn after the bullet exits the muzzle. This is felt by the flip and seen by the muzzle fire.

This patented barrel system permits the utilization

of a longer barrel, ensuring total powder burning inside the barrel without sacrificing the operation of the gun. Thus eliminating common malfunctions which frequently occur. By implementing these longer barrels, higher velocities are achieved while muzzle jump and recoil are greatly minimized.

Longer barrels stand out for increased accuracy.

Fig.2  When the bullet passes the ports, inside - in the Impulse chamber - the gas pressure is build up and the gas is then pushing the impulse ring on to the slide.

Fig. 3 After the bullet has exited the barrel, and the next cartridge has been loaded, the slide pushes the impulse ring back into its starting position.

The IGB Patent

The IMPULSE SYSTEM uses powder gases, collected via ports in the barrel and transfers this energy via a hollow chamber (gas collector or impulse chamber) and a sliding element (impulse transfer ring) to the slide. This impulse equalizes the mass irregularities and allows reliable function even with heavier or longer barrels.

      -----Abb. Glock 17 with 16" IGB barrel and shroud attached to the barrel.

System Use

The Impulse System was developed to eQualityuip pistols, which dispose of a Browning type lockup (i.e. Glock, Colt, CZ ) with barrels up to 42 cm (16") length. Moreover, these units offer for the first time the advantage of using compensators or longer match barrels in combination with target loads. Abb. Glock 17 with IGB 10" barrel and matching shroud.

The Shroud

The optical impression is similar to a sound suppression device. The IGB shroud, due to its open construction, does not suppress the sound, nor can it be altered to do so. The IGB shroud protects the barrel or the shooters hand against burns.

• Delivery contains:
  • IGB Austria Glock Gen 5 7.5 Inch Barrel

  You may visit our IGB FAQ page for more information: General Information About IGB Barrels

There are Additional Models That are Available in Different Calibers:

• 9x25 Dillon 
• .400 Corbon
• .45 GAP 
• 9x21 
• 7.65 Para 
• 9Makarov

Some Also Available for Different Threding:

• M13x1R
• M13x1 L
• M13.5x1L
• (B&T)
• M14x1R
• M14x1 L
• M15x1R
• M15x1L
• M16x1R
• M16x1L

About the Company:

Pistol shooting is a top-level sport

Major advantage gives a precision match barrel, which differs from the original barrel by best fitting, special profiles and last, but not least, by high-end steel material of high viscosity. In contrast to stainless - high-end steel with special hardening preserves the viscosity and lifetime of a barrel. No broken ramps, no cracking of cartridge housings. Lasting best results.

Standard was yesterday... Barrel Technology by IGB Austria is the TODAY.

State-of-the-Art - Barrel Technology from Austria

IGB barrel profile - hexagonal: polygonal

IGB Austria with its in-house blank production combines both of two worlds. The conventional field-groove profile is used for best control of bullets or lead bullets. If you have a closer look at the profile you find the angle between groove-to-field to be similar to a polygon (60°) with slightly rounded edges. For this reason, IGB barrels are having a longer lifetime and are more cleaning friendly than others.

Cold Forged Steel

Unsurpassed density. Hard on the surface, "soft" inside. The parameters of a barrel to be hard/viscous and flexible are not exempting each other, but are combined in IGB Austria Barrel Production. IGB Austria forces the tool through the barrel with tons of pressure. The result is a precise, mirror polished barrel with great vibration characteristic and durability.

Plasma Hardening Procedure

Barrels, made by IGB Austria get treated the modern way of Hardening - the Plasmanitration. Diamond hard smooth surfaces without the known weaknesses of the tenifer process (loss of material flakes on the inner surface). Plasmanitration delivers characteristically a very dark grey surface, is corrosion resistant and comes close to diamond hardness.

Quality Assurance

IGB Austria works with special in-house adapted machinery to ensure best quality and precision. IGB Barrel - even if they are sold as drop-in will always go to the edge of best fitting. Tolerances are kept tight and optimized for shooters needs.

Polygonal Rifling:

Polygonal or wavy rifling has more shallow channels than traditional (Lands-and-Grooves) rifling. This allows the least amount of gas to escape around the bullet leaving the barrel. It also creates a greater bearing surface which will increase velocity and accuracy. It's extremely important when shooting through a window/doors or other hard surfaces.

Several advantages for Polygonal Rifling:

• Not compromising the barrel's thickness in the area of each groove as with traditional rifling.
• Providing a better gas seal around the projectile as polygonal bores tend to have a slightly smaller bore area, which translates into more efficient use of the combustion gases trapped behind the bullet, slightly greater (consistency in) muzzle velocities and slightly increased accuracy.
• Less bullet deformation, resulting in reduced drag on the bullet when traveling through the barrel which helps to increase muzzle velocity.
• Reduced buildup of copper or lead within the barrel which results in easier maintenance characteristics.
• Less sensitive to stress concentration induced barrel failure.
• Prolonged barrel life.

Review by Pacific TacWest