What is second generation USP?

[Martial]

Grayguns' website states they offer a competition reduced reset action package for second generation USP's only.
How does a person find out if their USP is second generation or not, and what's the difference between the first and second generation? Is one theoretically more desireable for carry than the other?

[SIGtrarian]

Grayguns' website states they offer a competition reduced reset action package for second generation USP's only.
How does a person find out if their USP is second generation or not, and what's the difference between the first and second generation? Is one theoretically more desireable for carry than the other?The first generation USP had an all steel hammer, no rubber hammer spur, and a traditionally rifled barrel. The hammer/trigger parts are not interchangeable.

http://www.charter.net/google/redirect.php?to=aHR0cDovL3d3dy5oay11c2EuY29tL2ltYW dlcy9zaGFyZWQvVVNQJTIwTWFudWFsJTIwUkVWJTIwMy0wNy5w ZGY%3D&context=results.1&count=3&_LT=GRLK_GBARGLBLX_OGRSR

See page 29.

[Martial]

Very helpful. Thanks!