Douglas,
You can get a P-T ("Practical-Tactical") tritium front replacement sight from the folks down at Innovative Weaponry Inc. ("IWI") down in Fort Worth, Texas.
Their website is
www.ptnightsights.com and their toll-free 800-334-3573.
Regards,
Kinson
[This message has been edited by YeeDude (edited January 17, 2000).]