2010 Airsoft Weapons Classification Guidelines:

Class 1
All airsoft players that meet the requirements outlined in the rules section and are in good standing with Black Ops Airsoft will be automatically qualified to use class 1 airsoft weapons at Black Ops Airsoft events.
Max fps: 350 (0.2g 6mm)
Minimum Engagement: None
Max BB weight: 0.30g 6mm
Max Rate of Fire: None
Special Restrictions: None
Class 2
All airsoft players that meet the requirements outlined in the rules section and are in good standing with Black Ops Airsoft will be automatically qualified to use class 2 airsoft weapons at Black Ops Airsoft events.
Max fps: 390 (0.2g 6mm)
Minimum Engagement: 30 Feet (this is for full auto)
(this is currently being discussed, and is subject to change)Max BB weight: 0.30g 6mm
Max Rate of Fire: 15
Special Restrictions: None
Class 3
Class 3 weapons require the user to take a brief safety course given by one of the Black Ops Airsoft Chief Field Marshals on site, no cost.
Max fps: 400 (0.2g 6mm)
Minimum Engagement: 50 Feet
Max BB weight: 0.30g 6mm
Max Rate of Fire: Semi-Automatic Only
Special Restrictions: Semi-Automatic only, no other player may use the weapon
Class 4
Class 4 weapons require the player to pass a $10.00 Class 4 Weapons Safety Course (good for that season) Given by a Black Ops Airsoft Chief Field Marshal on site.
Under no circumstances will class 4 Airsoft weapons be allowed inside any building, hallway, structure, or tunnel. Ever.Max fps: 450 (0.2g 6mm)
Minimum Engagement: 50 Feet
Max BB weight: 0.30g 6mm
Max Rate of Fire: 12
Special Restrictions: Automatic Support Weapons ONLY These include:
M249
M60
RPK
no aeg with a cmag etc.
Class 5
The first of the Sniper level classifications, a player wishing to use a class 5 airsoft weapon must complete a brief safety course given by one of the Black Ops Airsoft Chief Field Marshals on site, no cost.
Max fps: 410 (0.2g 6mm)
Minimum Engagement: 50 Feet
Max BB weight: 0.43g 6mm
Max Rate of Fire: None
Special Restrictions: Bolt Action Only
Class 6
Any Player wishing to use a Class 6 Airsoft weapon must first hold a Class 5 airsoft certification (from that play year) and pass a $10.00 Class 6 Weapons Safety Course (good for that season) Given by a Black Ops Airsoft Chief Field Marshal on site.
Max fps: 450 (0.2g 6mm)
Minimum Engagement: 50 Feet
Max BB weight: 0.43g 6mm
Max Rate of Fire: None
Special Restrictions: Bolt Action Only
Class 7
Any Player wishing to use a Class 7 Airsoft weapon must first hold a Class 6 airsoft certification (from that play year) and pass a $10.00 Class 7 Weapons Safety Course (good for that season) Given by a Black Ops Airsoft Chief Field Marshal on site.
Max fps: 500 (0.2g 6mm)
Minimum Engagement: 75 Feet
Max BB weight: 0.43g 6mm
Max Rate of Fire: None
Special Restrictions: Bolt Action Only
Class 8
Any Player wishing to use a Class 8 Airsoft weapon must first hold a Class 7 airsoft certification (from that play year) and pass a $10.00 Class 8 Weapons Safety Course (good for that season) Given by a Black Ops Airsoft Chief Field Marshal on site.
Max fps: 557 (0.2g 6mm)
Minimum Engagement: 100 Feet
Max BB weight: 0.43g 6mm
Max Rate of Fire: None
Special Restrictions: Bolt Action Only