Does anyone else wonder if the $275 Drop-in auto sear ad that's been in the Shotgun News for a few years is nothing more than an ATF set up? I mean think about it-- They can only deliver COD (meaning you must physically hand over the cash to a "deliveryman" in person) And yet the seller is sophisticated enough to have an 800 phone number. The ad claims that the sears are "pre-81" whatever that means, but If the ad is true and actually legal, why do people routinely pay $12,000+ for a legal class III M16 if you can get this thing for 275? Are people really dumb enough to fall for this entrapment? I mean that ad has been around for years!