Convert Your .223/5.56 Upper to .22LR with Ease BoreBuddy’s modular chamber adapter inserts into a dedicated 22lr bolt group to allow your bolt to be used in a .223/5.56 upper. Compatible with AR uppers chambered in .223/5.56. No need to purchase additional parts or swap the collar on your bolt; just insert the adapter to convert your bolt to a conversion kit. BoreBuddy collar recommended due to increased retention force.
