I just picked up a Glock 34 Gen 4 on Black Glock Friday as my CMas present from me to me. Since I plan to use this for local IDPA shooting I would really like to hear from other Glockers on what they have modified or added to their Glocks for IDPA. I have some ideas but I value the opinions of others who have gone before me. One question in particular . . . are Meprolight Tru-Dot Adjustable Night Sights allowed? Also, what holsters do others prefer for IDPA? Thanks guys and Merry CMas (or Happy Holiday of your choice) to everyone!