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Glock 20 | Gen 3,4 | IGB Caliber change Barrel | .357 Sig | Polygon

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Glock 20 | Gen 3,4 | IGB Caliber change Barrel | .357 Sig | Polygon

Product No.:: L-20A-P357-S118
Shipping time:: in stock (see shipping)
Stock:: pieces

CIP Proof Mark:

276,00 EUR

incl. 20% tax

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Description

Description

Conversion Steps:
1. Replace the .10auto barrel by the .357Sig barrel of IGB Austria, which is machined to be compatible with a OEM Glock 20 Slide.
2. The 10mm Auto has more recoil energy than .357 SIG (e.g., 10mm can push 650 ft-lbs, while .357 SIG tops out around 500 ft-lbs). The stock 10mm recoil spring assembly is usually overbuilt for .357 SIG, so it’ll function.
3. Good news: The 10mm Auto magazines (e.g., Glock 20 mags) work fine with .357 SIG. Both cartridges have the same case head diameter and overall length (the .357 SIG is slightly shorter but fits the same magwell). No swap needed.
A barrel swap is the main expense. No need for a new slide or frame

The IGB Polygon Profil Design:
The internal barrel profile does not have sharp edges (lands/grooves), but instead features smooth, rounded transitions. These gentle curves slightly deform the bullet and create a better gas seal, which results in increased muzzle velocity

Advantages:

Often delivers higher muzzle velocities (5–15% more, depending on the load)
Can be more accurate with jacketed bullets due to more consistent bore contact and reduced deformation
Glock shooters often praise the accuracy of polygonal barrels, especially with calibers like .357 SIG or 10mm.Less lead fouling, since there are no sharp edges where lead can build up.
Easier to clean thanks to the smoother profile
Longer barrel life, as there are no sharp edges to wear down

CIP Proof Mark, what is this?
CIP Proofing is the proof against a certain pressure inside the barrel. These markings are mandatory in certain countries like; Belgium, Chile, Germany, Finland, France, Great Britain, Italy, Austria, Russia, Slowakia,Spain, Czech Republic, Hungary and the Emirates

Manufacturer Information:
IGB Austria manufactures barrels from steel block to finished product and is Europes largest pistol barrel manufacturer. Being independent of any blank supply, IGB Austria chooses the finest steel for pistol barrels. In terms of Glock Pistols, IGB Austria offers barrels for any Glock, for any Generation, in any length and exports those in-house produced barrels worldwide.

Warranty:
Every IGB barrel is sold with a warranty to last up to 75 000 rounds if used with factory ammunition according to the C.I.P. or SAAMI standards.

Please note:
This product is not subject to free trade. Please see & read our General Terms of Business.

For more information, please visit the home page for this product.