If I may quote Heavy on this, found it in another thread - To recapitulate:
Stock Service Pistol Division (SSP)
Handguns permitted for use in this division must:
A. Be semi-automatic.
B. Be double action, double action only, or safe action (when
the trigger is pulled, the hammer/striker is cocked and then
released).
C. Be 9mm (9x19) or larger caliber.
D. Have a maximum unloaded weight of 39oz., including an
empty magazine. (Will be effective January 25, 2006)
E. Have a minimum annual production of 2000 units;
(discontinued models must have had a total production of
20,000 units).
F. Fit in the IDPA gun test box measuring 8 ¾ x 6 x 1 5/8
with an empty magazine inserted.
G. Be loaded to the division capacity of ten (10) rounds in the
magazine plus one (1) round in the chamber. Should division
capacity not be achievable because of lower magazine
capacity, load to maximum mechanical capacity of magazine
plus one (1) round in the chamber. Competitors must use the
same capacity magazines through out the competition(Example: if you start with a 9 round magazine, you must use
that capacity magazine throughout the match).
H. Begin hammer down for selective DA/SA pistols.
PERMITTED Modifications (Inclusive list):
1. Sights may be changed to another conventional notch and
post type (see sights in glossary for further information).
2. Grips may be changed to another style or material that is
similar to factory configuration (no weighted grips; see
weighted grips in glossary for further details).
3. A slip-on grip sock and/or skateboard tape may be used.
4. Internal action work may be used to enhance trigger pull as
long as safety is maintained (no visible external modifications
allowed).
5. Reliability work may be done to enhance feeding and
ejection.
6. Internal accuracy may be worked to include replacement of
barrel with one of factory configuration and original caliber.
7. Plastic plugs may be used to fill the opening behind the
magazine well.
8. Custom finishes may be applied.
NOTE: The slide releases and magazine releases that are standard
on the Glock 34 and 35 models are available as a factory option on
all Glocks available in the USA. Because of this, that type of slide
release and magazine release are legal on all Glocks for SSP.
EXCLUDED Modifications (NON-Inclusive list):
1. Externally visible modifications other than grips or sights.
2. Robar style grip reduction.
3. Add-on magazine well opening.
4. Guide rods made of a material different from the factory part
it replaces.
5. Seattle Slug Grip Plug and similar weighted products.
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6. A barrel of another caliber that is not offered in the original
factory model.
7. Slide lightening (see slide, lightening in glossary for
further information).
8. Checkering and stippling.
9. Refer to Appendix ONE-A. Firearms-Non-IDPA-Legal
Modifications.
3. Enhanced Service Pistol Division (ESP)
Handguns permitted for use in this division must:
A. Be semi-automatic.
B. Be 9mm (9x19) or larger caliber.
C. Have a maximum unloaded weight of 43 oz., including an
empty magazine.
D. Fit in the IDPA gun test box measuring 8 ¾ x 6 x 1 5/8.
with an empty magazine inserted.
E. Be loaded to the division capacity of ten (10) rounds in the
magazine plus one (1) round in the chamber. Should division
capacity not be achievable because of lower magazine
capacity, load should be to maximum mechanical capacity of
magazine plus one (1) round in the chamber. Competitors
must use the same capacity magazines through out the
competition (Example: if you start with a 9 round magazine,
you must use that capacity magazine throughout the match).
Pistols approved for SSP may also be used in ESP and CDP
depending upon caliber, even if the pistol in question has a fulllength
dust cover. However, should the pistol in question have a
modification that removes it from SSP, it must meet all other
division criteria for ESP or CDP, again depending upon caliber.
PERMITTED Modifications (Inclusive list):
1. Sights to another notch and post type (see sights in
glossary for further information).
2. Grips (no weighted grips; see weighted grips in glossary
for further details).
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3. Internal accuracy work (includes: replacement of the barrel
with one of factory configuration, the use of Accu-Rails, the
use of Briley Bushings).
4. Internal reliability work.
5. Checker frontstrap and backstrap.
6. Checker or square and checker trigger guard.
7. Cosmetic checkering/serrating.
8. Extended thumb (may be ambidextrous) and Beavertail grip
safeties.
9. Extended magazine release (button may not be oversize in
diameter or protrude more than .2 out from the frame).
10. Factory installed cone style barrels on pistols with a barrel
length of 4.2 or less.
11. Full length guide rod manufactured of material that is no
heavier than common steel.
12. Hammer and other trigger action parts to enhance trigger
pull (includes the use of over travel stop).
13. Beveled magazine well and add-on well extensions.
14. Custom finishes.
EXCLUDED Modifications (NON-Inclusive list):
1. Full length dust covers of carbon or stainless steel.
2. Oversize diameter magazine release buttons.
3. Trigger shoes.
4. Slide lightening (see slide, lightening in glossary for
further information).
5. Refer to Appendix ONE-A. Firearms-Non-IDPA-Legal
Modifications.
4. Custom Defensive Pistol Division (CDP)
Handguns permitted for use in this division must:
A. Be semi-automatic.
B. Be .45 ACP caliber.
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C. Have a maximum unloaded weight of 41 oz., including an
empty magazine.
D. Fit in the IDPA gun test box measuring 8 ¾ x 6 x 1 5/8
with an empty magazine inserted.
E. Be loaded to the division capacity of eight (8) rounds in the
magazine plus one (1) round in the chamber. Should division
capacity not be achievable because of lower magazine
capacity, load should be to maximum mechanical capacity of
magazine plus one (1) round in the chamber. Competitors
must use the same capacity magazines through out the
competition (Example: if you start with a 7 round magazine,
you must use that capacity magazine throughout the match).
High capacity pistols can be used as long as the pistol meets ALL
division criteria.
Pistols approved for SSP may also be used in ESP and CDP
depending upon caliber, even if the pistol in question has a fulllength
dust cover. However, should the pistol in question have a
modification that removes it from SSP, it must meet all other
division criteria for ESP or CDP, again depending upon caliber.
PERMITTED Modifications (Inclusive list):
1. Sights to another notch and post type (see sights in
glossary for further information).
2. Grips (no weighted grips; see weighted grips in glossary
for further details).
3. Internal accuracy work (includes: replacement of the barrel
with one of factory configuration, the use of Accu-Rails, the
use of Briley Bushings).
4. Factory installed cone style barrels are permitted on pistols
with a barrel length of 4.2 or less.
5. Internal reliability work.
6. Checker frontstrap and backstrap.
7. Checker or square and checker trigger guard.
8. Cosmetic checkering/serrating.
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9. Extended thumb (may be ambidextrous) and Beavertail grip
safeties.
10. Extended magazine release (button may not be oversize in
diameter or protrude more than .2 out from the frame).
11. Full length guide rod manufactured of material that is no
heavier than common steel.
12. Hammer and other trigger action parts to enhance trigger
pull (includes over travel stop).
13. Beveled magazine well and add-on well extensions.
14. Custom finishes.
EXCLUDED Modifications (NON-Inclusive list):
1. Full length dust covers of carbon or stainless steel.
2. Oversize diameter magazine release buttons.
3. Trigger shoes.
4. Slide lightening (see slide, lightening in glossary for
further information).
5. Refer to Appendix ONE-A. Firearms-Non-IDPA-Legal
Modifications.
5. Enhanced Service Revolver Division (ESR)
Handguns permitted for use in this division must:
A. Be any revolver of 9mm caliber (.355 or larger) or larger
bore diameter utilizing rimmed or rimless cartridges, which
may safely make a power factor of 165,000.
B. Have a barrel length of 4.2 or less (as measured from the
front of the cylinder).
C. Have a maximum unloaded weight of 50 oz.
D. Be loaded to the division capacity of six (6) rounds in the
cylinder. Seven (7) and eight (8) shot revolvers are permitted,
but may only load six (6) rounds.
Revolver may be reloaded via speedloader or full moon clip.
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PERMITTED Modifications (Inclusive list):
1. Sights to another conventional notch and post type (see
sights in glossary for further information).
2. Action work to enhance trigger pull as long as safety is
maintained (smoothing the trigger face, removing the hammer
spur, use of over travel stop, conversion to DA only and
addition of ball detent are considered action work and are
permitted).
3. Grips to another style or material that is similar to factory
configuration (no weighted grips).
4. Chamfer the rear of the chambers.
5. Shortening of factory barrels.
6. Conversion from rimmed to rimless ammunition.
7. Custom finishes.
EXCLUDED Modifications (NON-Inclusive list):
1. Oversize or heavy barrels.
2. Oversize cylinder latches.
6. Stock Service Revolver Division (SSR)
Handguns permitted for use in this division must be:
A. Any revolver of .38 Caliber (.357 or larger) or larger that
utilizes ammunition with a rimmed case and is not reloaded
with a full moon clip.
B. Barrel length of 4.2 or less (as measured from the front of
the cylinder).
C. Have a maximum unloaded weight of 42 oz.
D. Be loaded to the division capacity of six (6) rounds in the
cylinder. Seven (7) and eight (8) shot revolvers are permitted,
but may only load six (6) rounds.
PERMITTED Modifications (Inclusive list):
1. Sights to another conventional notch and post type (see
sights in glossary for further information).
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2. Action work to enhance trigger pull as long as safety is
maintained (smoothing the trigger face, removing the hammer
spur, use of over travel stop, conversion to DA only and
addition of ball detent are considered action work and are
permitted).
3. Grips to another style or material that is similar to factory
configuration (no weighted grips).
4. Chamfer the rear of the chambers.
5. Shortening of factory barrels.
6. Custom finishes.
EXCLUDED Modifications (NON-Inclusive list):
1. Oversize or heavy barrels.
2. Oversize cylinder latches.
7. Back Up Gun (BUG)
This division is intended for club level matches ONLY and will
not be recognized at the annual Championship or any Sanctioned
Match. All CoF for the Back-Up Gun Division must be limited to
five (5) rounds maximum per string (no reloads on the clock) to
allow autos and revolver shooters to compete equally.
Handguns permitted for use in this division must:
A. Be single or double action.
B. Be either pistol or revolver.
C. Be .32 auto or larger.
D. Have a barrel length:
1. Semi-automatic, 3.8 or less (factory installed cone style
barrels with or without a barrel bushing are permitted).
2. Revolver 3 or less.
E. Maximum (total) number of rounds that may be loaded into
the handgun is five (5).
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PERMITTED Modifications (Inclusive list):
1. Revolvers:
A. Sights to another conventional notch and post type (see
sights in glossary for further information).
B. Grips to another style or material that is similar to factory
configuration (no weighted grips).
C. Action work to enhance trigger pull as long as safety is
maintained.
D. Bob hammer spur.
E. Chamfer cylinder.
F. Custom finishes.
2. Pistols:
A. Sights to another conventional notch and post type (see
sights in glossary for further information).
B. Grips to another style or material that is similar to factory
configuration (no weighted grips).
C. Slip-on grip sock and/or skateboard tape.
D. Action work to enhance trigger pull as long as safety is
maintained.
E. Reliability work to enhance feeding and ejection.
F. Internal accuracy work to include replacement of barrel with
one of factory configuration (factory installed cone style
barrels are permitted).
G. Custom finishes.