The Builders kit is designed for firearm owners who already have many 5.56 parts. We'll supply all the important proprietary parts while you use your already owned parts. Saving you more money. The R

The Builders kit is designed for firearm owners who already have many 7.62 parts. We'll supply all the important proprietary parts while you use your already owned parts. Saving you more money.Barrel

Transform your Raven from 9x19mm to 5.56 NATO without any tools in under 30 seconds.5.56 Barrel twist rate: 1:8Parts Included:Mid Length Magwell - Fits 5.56 (PLATINUM & GOLD)Ambidextrous Magazine

Transform your Raven from 5.56 NATO to 9x19mm without any tools in under 30 seconds.9x19mm Barrel twist rate: 1:10Parts Included:Standard Length Magwell (Fits 9x19mm and .40 S&W) (PLATINUM & G

Transform your Raven from 5.56 NATO to .300 AAC Blackout without any tools in under 30 seconds.300 AAC Blackout Barrel twist rate: 1:10** Barrel Nut and Handguard not included unless selected as an op