If you have technical questions, please give us a call my tech/gunsmith will be able to answer all of your questions. 402-721-4277. Our tech hours are as follows: Tech hours Mon-Thurs 10:30 A.M. – 4:00 P.M. CST Tech hours Friday 10:30 A.M. – 2:00 P.M. CST Our tech usually takes lunch between 11:30 and 12:30 CST. Please do not email us through the "contact us" as we do not answer technical questions via email at this time.