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Chrono

Chrono

Chronographs measure the velocity of the BB as it exits the muzzle of an airsoft weapon to ensure it is operating within safety limits. (Different Airsoft fields and events may have different Feet Per Second (FPS) / Joules for each weapon system classification.) 

ALL WEAPONS WILL UNDERGO A CHRONO CHECK EVERYTIME THEY ARE USED AT 878 AIRSOFT AND MAY BE SPOT CHECKED DURING GAMEPLAY. 

!!! 30 ROUNDS PER SECOND(RPS) MAXIMUM ON ALL FULL AUTO CAPABLE WEAPONS. !!!

OUTDOOR

Weapon System Minimum Engagement Distance (MED) Maximum FPS/Joules (HPA) Chrono BB Weight HPA Chrono BB Weight Operation Use Drum/Box Magazine
Pistol, Shotgun, SMG 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field Semi ONLY at < 20 feet Pistol Caliber ONLY
Rifle 20 feet 400 fps / 1.55 joules 0.2g Weight used on field Semi / Full NO
Designated Marksman (DMR) 50 feet 450 fps / 2.1 joules 0.2g Weight used on field Semi Locked NO
Support Weapon 50 feet 450 fps / 1.88 joules 0.2g Weight used on field Semi / Full YES
Sniper Rifle 100 feet 550 fps / 3.6 joules 0.2g Weight used on field Bolt Action NO

!!! NOTE:  External HPA regulators must be locked to prevent field adjustment. !!!

  • Green gas and Co2 pistols are treated as non-HPA for the purposes of chrono.
  • NO full auto at less than twenty (20) feet. (<20 feet)
  • NO full auto of any weapon system is allowed for CQB or inside if ANY buildings (including the indoor field).
  • Adding a box/drum style magazine to an M4 or AK rifle in order to use in a support role is NOT permitted.
  • Designated Marksman riles, support weapons, and sniper rifles are NOT permitted for use inside of ANY buildings. 
  • 878 Airsoft reserves the right to re-chrono any weapon as deemed necessary.

INDOOR

Weapon System Minimum Engagement Distance (MED) Maximum FPS/Joules (HPA) Chrono BB Weight HPA Chrono BB Weight Operation Use Drum/Box Magazine
Pistol, Shotgun, SMG 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field (0.28g MAX) Semi ONLY Pistol Caliber ONLY
Rifle 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field (0.28g MAX) Semi ONLY NO
Designated Marksman (DMR) 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field (0.28g MAX) Semi ONLY NO
Support Weapon 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field (0.28g MAX) Semi ONLY YES
Sniper Rifle 0 feet 350 fps / < 1.0 joules 0.2g Weight used on field (0.28g MAX) Semi ONLY NO

!!! NOTE:  External HPA regulators must be locked to prevent field adjustment. !!!

  • Green gas and Co2 pistols are treated as non-HPA for the purposes of chrono.
  • NO full auto at less than twenty (20) feet. (<20 feet)
  • NO full auto of any weapon system is allowed for CQB or inside if ANY buildings (including the indoor field).
  • Adding a box/drum style magazine to an M4 or AK rifle in order to use in a support role is NOT permitted.
  • Designated Marksman riles, support weapons, and sniper rifles are NOT permitted for use inside of ANY buildings. 
  • 878 Airsoft reserves the right to re-chrono any weapon as deemed necessary.

Specific Weapon Type Restrictions (Outdoor)

SMG (Sub-Machine Gun)

    • NO full auto if less than twenty (20) feet. (< 20 feet)

Designated Marksman (DMR)

    • NO CQB OR USE INSIDE OF ANY BUILDINGS IS ALLOWED. 
    • Weapon must look and functions like a long-range rifle.
    • Must have at least two (2) of the following:
      • Bipod
      • Scope
      • Fixed Stock (Stock that is not easily adjustable in length. MilSim events could differ)
    • NO box magazines or drum magazines.

Support Weapons

    • NO CQB OR USE INSIDE OF ANY BUILDINGS IS ALLOWED.
    • Weapon must look and functions like a light machine gun. (Examples: 249 Bravo, M60, MG36, RPK, PKM, MG42, etc.)
    • ADDING A BOX OR DRUM STYLE MAGAZINE TO AN M4 OR AK RIFLE IN ORDER TO USE IN A SUPPORT ROLE IS NOT PERMITTED.

Sniper Rifles

    • NO CQB OR USE INSIDE OF ANY BUILDINGS IS ALLOWED. 
    • Must have a magnified scope and a bolt action system.
    • NO box magazines or drum magazines.

!!! 878 Airsoft management reserves the right to adjust the restrictions as necessary to maintain safety on the field. !!!