Here is their response:
Randall
Modifying the gun can cause it to go out of warranty.
USFA Lifetime Warranty.
What is included:
U.S. Fire Arms stands behind its products. U.S. Fire Arms products are warranted, subject to the conditions below, for as long as you, the original purchaser, owns the firearm. This is a mechanical device and has a ‘Life.’ The life or duration depending on severity of use, climate, care, ammunition, etc.
What is excluded from our Lifetime Warranty:
Firearms that are Out of Proof. An Out of Proof Fire Arm is one which has been brought out of its normal operating range; caused by use of non-factory parts, use of reloaded ammunition, or improper ammunition, powder, neglect, corrosion, abuse, wear, alteration of mechanism, defacement of proof marks, serial numbers, or, alteration of internal or external parts, and, any other operation or alteration on the fire arm which we feel brings it Out of Proof. Be sure to retain your sales slip as proof of purchase and date when making a claim. While we are aware that many shooters reload there own with no problem, hot loads are not recommended.
Thanks for your interest in USFA!
I responded by asking if they could do it and what the turn around time would be. I sure would hate to miss next months match waiting for my pistolas. When I get their response I will let you all know.
BSB