imported post
pretty close.....the m9 is essentially a 92fs though some of the very early models were infact based on the 92f model differences are listed below
1. The M9 usually has a straight dustcover and non-radiused backstrap (Contract Pistols will always be straight/straight)
2. The 92FS (recent model) has a radiused backstrap and angled dustcover. Older FS models had a straight dustcover
3. M9 markings (including proof markings and cage # markings)
4. M9 lacks the warning to read owner's manual
5. The rear sight of the 92FS has 2 dots, whereas the M9 has a single half-moon
the only difference between the f and fs models was an enlarged hammer pin head and a subsequent slot milled into the bottom of the slide to accept the larger pin. this was done as a result of very early military testing of the M9 with high pressure ammo. after a while they had some slide breakage (because of the hot ammo) and the fs mod was done to keep the slide from flying off the frame into the shooter during a catastrophic failure. like i previously mentioned, if you use standard pressure ammo, you will never have to worry about eating a slide for lunch.
there are currently 4 generations of locking blocks, improvements one after the other in an effort to extend the life of the locking block. they were not model specific (F or FS) though. IIRC all generations are interchangable
*edit* here is a good video describing the whole M9 vs. 92FS thing
http://www.youtube.com/watch?v=iRJgBqaDOzs
pretty close.....the m9 is essentially a 92fs though some of the very early models were infact based on the 92f model differences are listed below
1. The M9 usually has a straight dustcover and non-radiused backstrap (Contract Pistols will always be straight/straight)
2. The 92FS (recent model) has a radiused backstrap and angled dustcover. Older FS models had a straight dustcover
3. M9 markings (including proof markings and cage # markings)
4. M9 lacks the warning to read owner's manual
5. The rear sight of the 92FS has 2 dots, whereas the M9 has a single half-moon
the only difference between the f and fs models was an enlarged hammer pin head and a subsequent slot milled into the bottom of the slide to accept the larger pin. this was done as a result of very early military testing of the M9 with high pressure ammo. after a while they had some slide breakage (because of the hot ammo) and the fs mod was done to keep the slide from flying off the frame into the shooter during a catastrophic failure. like i previously mentioned, if you use standard pressure ammo, you will never have to worry about eating a slide for lunch.
there are currently 4 generations of locking blocks, improvements one after the other in an effort to extend the life of the locking block. they were not model specific (F or FS) though. IIRC all generations are interchangable
*edit* here is a good video describing the whole M9 vs. 92FS thing
http://www.youtube.com/watch?v=iRJgBqaDOzs