Special features include: * Ready to use, pre-fit drop in. No gunsmithing required. * Precision machined from heat treated 416R stainless forgings. * Oversized lock-up area produces greater shot-to-shot accuracy. * Tighter dimensions than the original. * Polished feed ramp and bore, diamond turned exterior. * Maximum chamber support, improved feed ramp design. * Match grade broach cut rifling and target crown. * Ok to use lead, plated or jacketed bullets. * Lifetime warranty.