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Just swap this drop in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR. Ships with 25rd 22LR magazine. For best performance use a round style hammer as notched hammers can cause function issues and 36 grain plated nose bullets have proven to be the best choice for function.

The ECHO kit comes with one 25RD Magazine, Anti-Jam Charging Handle, Cleaning Jag Guide Rod and Forward Assist Adaptor

FEATURES:

All Stainless Steel Construction, includes Anti-Jam Charging Handle, Cleaning Jag Guide Rod, Forward Assist Adaptor, and a 25rd Magazine.
Works in most 5.56/.223 chambered rifles.
For information not covered here, or Frequently Answered Questions, check this FAQ Page.