[robotoid]

Any tips on how to get this SOB off?? I tried heating it with a heat gun to no avail. I'm afraid to use too much force on it to get it off and end up breaking loose the breach end of the barrel from is plastic housing.

 

[KT9mm]

Not trying to insult you; just helpful . . . here is the description in the owner's manual

The thread protector on the SUB-2000™ is removable, if the shooter desires to replace
the thread protector with a compatible accessory for the 1/2"-28 threads (9mm model)
or 9/16"-24 threads (.40 cal S&W). To do so, you will need a vice, and wrench (or
socket with breaker bar); these tools are not included.
Ensure the weapon is unloaded (no magazine or ammunition in the weapon). Place
the weapon in SAFE configuration. Lock the weapon securely down, possibly in a
vice, so the weapon will not move. Add the wrench to the thread protector and turn
counter-clockwise to loosen and remove the thread protector. Once removed, a
compatible accessory for the specific caliber thread can be added to the exposed
barrel threads.

Maximum torque on barrel is 25 foot - pounds. Do NOT tighten accessories onto
barrel beyond this torque; doing so, may damage weapon.

 

[tjps]

Clamp the front sight in a vise using two soft wood blocks. No mars on the barrel and no stress on anything plastic. It works great for me. I recommend using a quality 6 point socket to remove the nut.

 

[MarkCO]

You can also use a rag over the front sight post with an adjustable wrench, then a socket or wrench on the thread protector if you do not have a vise. I have a vise and still do it this way.

 

[texcl2]

My
40 cal sub came with a canted front sight. It used a 3/4 wrench on the jam nut and a 5/8" on the muzzle cap working together the nut came right off. Then i mounted the front sight in the vise and loosened the jam nut and straightened the front sight, super easy.