The type of pistol you are using determines the Division you will be competing in. That way, you will be competing with others that have pistols similar to yours. Major-Minor, caliber, type of site, customization, number of rounds available, type of holster, how the holster and pistol are worn on the body, single action, double action, double action only...these are the criteria that place you into a particular division in which you will be shooting.
Open
This is the top-action division. High-capacity 1911s are
the tools of choice. Shooters can make all the
modifications allowed for Limited plus use a longer
magazine (170mm), optical sights and recoil
compensators. Any caliber .355 or larger bullet is
allowed. Any gun that doesn’t fit any other division is
Open. Major/Minor scoring.
Limited 10
Typically single-action autoloaders in .40 S&W and .45
ACP, although any Limited-legal firearm is permitted as
long as only 10 rounds are loaded. Shooters are limited
to 10 rounds in the magazine. Competitors may make minor
changes such as sights, grips, stops, magazine releases
and housing, but they may not add optical sights,
porting or recoil systems. Major/Minor scoring.
Limited
Same allowable changes as in Limited-10. Most shooters
choose the wide-body 1911s (STI, SV, Para-Ordnance,
Caspian), Glock, Springfield XD, or one of the various
CZ/TZ variants. Shooters may use a high-capacity
magazine no longer than 140mm. Major/Minor scoring
Single Stack
Only 1911 production-type pistols allowed. Pistols must
be available to the general public. No comps, barrel
weights, barrel ports, optic or any electronic sighting
device allowed. 10 rounds maximum per magazine for
Minor, 8 rounds for Major.
Production
Strictly limited to the use of production handguns with
double or safe-action triggers. Firearms in 9mm or .40
S&W are popular (Glock, Beretta, SIG, Springfield,
Para-Ordnance, LDA, etc). Shooters may change the sights
but no other externally visible changes are permitted.
Limited to 10 rounds. Holster and other equipment
restrictions also exist. Minor scoring only.
Revolver
This division is intended for stock revolvers (S&W 625
and the like). Shooters may fire only six rounds between
reloads with limited modifications permitted. No optical
sights, porting or recoil compensators are allowed.
Grips, sights and cylinders may be modified. Major/Minor
scoring.

