You can throw away your NRA Rulebooks.
Effective 1 Mar 12 under Rule 5.1.2:
"...CMP Games Events and Special EIC Matches described in Rule 9.0 shall be governed solely by this edition of the CMP Competition Rules."
There's a fair amount of new material (underlined in the rulebook text). Much of it is almost the same as the NRA versions but different enough that it bears reviewing.
If nothing else it eliminates all the back-and-forth between rulebooks that could get so aggravating.
A few more points of interest:
-Under Rule 6.3.1 7th dot, changing the size of the rear aperture on an "As Issued" rifle is now allowed. A literal reading of the rule says you can't use an undrilled but "NM" marked aperture but you can fill and re-drill a standard one
-Rule 6.3.2 3rd dot Type 1 NM (no bedding & no NM sights) are now considered "As Issued." Given that this is pretty much what most commercial and private rebuilds and CMP Specials are, this change is pretty much just an acknowledgement of reality
-Rule 6.11.1 prohibits "non-flexible" shooting jackets. Pretty sure this is aimed at the rigid ISSF-type coats or those with slide-in rigid inserts not the standard modern coats (eg, Creedmoor Hardback)
-Rule 6.11.2 Shooting pants and those funny shoes smallbore shooters use are now disallowed
-Rule 9.1.12 In a Games match a disabled rifle gets a max of three extra minutes to fix and finish any slowfire stage or the competitor may be resquadded to another existing relay. In rapids, if any shots are fired even if the rifle is disabled (rather than a simple stoppage) you're SOL This is one of those CMP/NRA differences: under NRA Rules a Disabled Rifle is treated differently from an Alibi
Go get your own copy http://www.odcmp.com/Competitions/Rulebook.pdf