I'm surprised that the value difference between a Lightning Link and a Drop In Auto Sear is so significant.
$20K to $21K for a Lightning Link versus $50K + for a DIAS.
In a lot of ways a Lightning Link is better. It drops right in the lower and completely replicates the M16's rate of fire. Plus you don't have to worry about leaving M16 parts in a lower like you do with a DIAS when you move the DIAS to a different lower receiver. Both of them usually need the same amount adjusting to get them to work in a new gun, and no need to switch out AR15 parts for M16 parts. If you want select fire, you can get a parts kit that provides select fire. I'm sure most trigger time with either Lightning Link or DIAS is in full auto anyway.
I know people are concerned about a Lightning Link being more fragile and prone to breaking, but that fear should have ended years ago with the KNS Lightning Link Re-Enforcer. I've never heard of a Lightning Link breaking with a KNS Re-Enforcer in place.
I know that you can't shoot .22 LR with a Lightning Link. But, it's not that great in an M16 and not worth the $30K price difference. You could pick up the best full auto .22, a Norrell Trigger Pack, a Lightning Link, and still end up paying less than a DIAS.
I just don't get the huge preference for a DIAS over a Lightning Link.
