The Marksman V4 Slide for Glock(R)G17's is machined from hardened 17-4 stainless steel to ensure long lasting performance. * Precisely machined RMR pattern with 2 alignment recoil bosses. * Features compatibility with Trijicon RMR, SRO or Holosun 507 red-dot optics. * Front & rear serrations for enhanced slide manipulation. * Compatible with 3rd Gen 9mm slide internals (not included). * Compatible with Glock(R)G17 Gen 3 & P80 PF940V2 frames. * QPQ Nitride finish provides wear and corrosion resistance. * Certified Gunsmith assembly recommended. 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. Neither 3CR Tactical nor this site are affiliated with, or endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of "GLOCK" on this page is merely to advertise the sale of aftermarket GLOCK pistol components. For genuine GLOCK, Inc. products, visit www.glock.com.