Speargun Shaft Charts

Before selecting the proper spear length, you must first know which type of shaft your gun accepts (Euro cut or USA cut). “Euro cut” spears are built for “Euro Trigger Mechanisms” and “USA cut” spears are build for “USA Trigger Mechanisms”.

DON'T use a Euro cut spear in a USA trigger mechanism.
DON'T use a USA cut spear in a Euro trigger mechanism.

Railgun (Euro Cut) Spear with Flopper:
When figuring out the proper spear (with flopper) length for a railgun, it is quite easy. All you do is add 40 cm to the length of the gun barrel. For example, a 100cm railgun, which has a 100cm barrel, would require a 140cm spear.

Railgun (Euro Cut) Spear with Threaded Tip (for use w/ slip tip or screw on) tip:
In determining the proper spear (with threaded tip) length for a railgun, you again, add 40 cm to the length of the barrel of the gun. However, you then deduct 10 cm from that number to account for the length of the slip tip and adapter or the screw on tip that you will be using. For example, a 100 cm gun would require a spear that is 140cm long, minus 10 cm = 130 cm threaded spear.

Wood or Hybrid (USA Cut) Spear with Flopper:
In determining the spear length for USA Mechanism Gun (wood or hybrid), the length of the barrel is not used. Instead, the distance between the back of the trigger mechanism to the front of the gun is used for calculating spear length. This is because with wood guns and hybrids, some have longer “butts” (distance between back of trigger mechanism to the back of the gun) than others.

There is no universal standard for selecting the proper spear length for a USA Mechanism Speargun (hybrid gun or wood gun). Some guys like a short overhang of around 10 inches, while others like a longer overhang of up to 15”. The average appears to be around 12” of overhang.

To determine the suggested length of spear for your USA mechanism gun:

  • Step #1: Determine the point where the back of the spear is located when it is engaged in the trigger mechanism.
  • Step #2: Measure from this point to the front of the gun.
  • Step #3: Then add approximately 12 inches to the previously obtained measurement. This will give you a suggested spear length with a 12 inch overhang. If you want a slightly shorter overhang, you can add less than 12 inches. If you want a longer overhang, you can add more then 12 inches.

Wood or Hybrid (USA Cut) Spear with Threaded Tip (for use w/ slip tips and screw on tips):
In selecting the proper length of a threaded spear (for slip tips), you will add only 6 inches of overhang instead of 12 inches to get a 12 inch overhang. This is because the slip tip (with the adapter) is normally around 6 inches long. So, the threaded spears are about 6 inches shorter than flopper spears. Example: A 58” threaded spear with a 6” slip tip (including adapter) makes for a 64” spear.

 

Spearmaster (KJ) Shafts [Euro / Tabbed / Hawaiian Flopper]
(can be used for any Euro gun)

Gun Stock Length Shaft Length (cm) Shaft Width Options (mm)
140cm 180 7.0 / 7.5 / 8.0
130cm 170 7.0 / 7.5 / 8.0
120cm 160 7.0 / 7.5 / 8.0
110cm 150 7.0 / 7.5 / 8.0
100cm 140 7.0 / 7.5 / 8.0
90cm 130 7.0 / 7.5 / 8.0
80cm 120 7.0 / 7.5 / 8.0
70cm 110 7.0 / 7.5 / 8.0
  100 7.0 / 7.5 / 8.
  90 7.0 / 7.5 / 8.0

 

Spearmaster (KJ) Shafts [Euro / Tabbed / Threaded]
(can be used for any Euro gun)

Gun Stock Length Shaft Length (cm) Shaft Widths (mm)
 150 180 8.0
 140 170 8.0
 130 160 8.0
 120 150 8.0
 110 140 8.0
 100 130 8.0
 90 120 8.0
 80 110 8.0
 70 100 8.0
  90 8.0

 

Rob Allen Shafts [Euro / Notched / Hawaiian Flopper]

Gun Model Length Shaft Length (cm) Shaft Width Options (mm)
700 110 6.6 / 7.0 / 7.5
800 120 6.6 / 7.0 / 7.5
900 130 6.6 / 7.0 / 7.5
1000 140 6.6 / 7.0 / 7.5
1100 150 6.6 / 7.0 / 7.5
1200 160 6.6 / 7.0 / 7.5
1300 170 6.6 / 7.0 / 7.5
1400 180 6.6 / 7.0 / 7.5
1500 190 6.6 / 7.0 / 7.5
1600 200 6.6 / 7.0 / 7.5

 

Riffe Shafts

Riffe Charts

 

 

AB Biller Shafts

 AB Biller Shaft Charts

 

JBL Shafts

JBL Speargun Shaft Chart