Glock 20 Gen 4 vs Gen 3
This review by hickok45 compares the Glock 20 Gen 3 and Gen 4 in 10mm Auto. While the Gen 4 features ergonomic upgrades like interchangeable backstraps and a revised grip texture, the primary internal change is a dual recoil spring assembly intended to reduce felt recoil. Testing with both standard and heavy 10mm loads revealed that the recoil reduction in the Gen 4 is subtle, with external factors like aftermarket grip enhancements often having a more noticeable impact on perceived recoil than the internal spring system difference.









