DISSENT .22LR AR Conversion Adapter For those times you want to take your 5.56mm or 5.7x28mm DISSENTA(R) to the range but don't want to spend an arm and a leg on ammo, now is the time to add a DISSENT .22 LR AR Conversion Adapter to your collection. Compatible with 5.56mm to .22 LR and 5.7x28mm to .22 LR AR Conversion kits. Description: For those times you want to take your 5.56mm or 5.7x28mm DISSENTA(R) to the range but don't want to spend an arm and a leg on ammo, now is the time to add a DISSENT .22 LR AR Conversion Adapter to your collection Compatible with 5.56mm to .22 LR and 5.7x28mm to .22 LR AR Conversion kits