Pre-travel and over-travel screws are included but not installed.
A competent gunsmith should do all gunsmithing. By purchasing this kit you release Upper up and it associate of all responsibility legally and finally financially.
*DISCLAIMER "GLOCK" is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. UPPER UP is not affiliated with nor endorsed by Glock, Inc. or Glock Ges.m.b.H. This product is to be installed by a competent gunsmith. No liability is expressed or implied for damage or injury which may result from installation or use of this product.