Holy crap, I just noticed how much Reptile is selling mags for here in the classifieds.
Not only are half of them not pre-ban (or at best questionable to the point where I wouldn't touch them with a ten foot pole) but they're priced 5x what they're worth!
I have yet to find any source other than "he said, she said" regarding the placement of caliber markings, dots, etc. Last time I asked this question I was referred to a book; so I purchase said book and found no such confirmation.
I've been in the mag game since 1993.
Before I even bought my 1st gun I was for some reason fascinated by the look, quality, and durability of Glock mags.
I bought my first Glock mag many years before owning a Glock - or any gun for that matter.
I have observed over the past 30 years the progression of the Glock mags in real time by observation and experience by attending gun shows religiously for the past 25 years.
All I ever do is research mags. I recall the changes to mags after the AWB ended versus the LEO / MIL mags that were made during the ban. There were key identifiable features that have come and gone over the years. My greatest vindication was when Patrick Sweeney came out with his book...
Amazon product ASIN 0896896420View: https://www.amazon.com/Gun-Digest-Book-Glock-2nd/dp/0896896420
It has 14 pages of details about pre ban Glock mags. I would love to post the JPEGs of those pages but it is a copyright violation. The kindle version is on $14 for the book anyway, so I want him to get his money. He is a great source of info as were past Glock Armorer classes where the instructors used to talk about pre ban mags. Now, nobody cares.
The section in NES about gun laws and Glock Pre Bans has lots of details brought forth over the past 20 years, also.
I don't think there is a single person in Massachusetts (the last pre ban state) that has obsessed exclusively as much as I have about pre ban Glock mags.
I would never testify in court for the state, however. Even Glock will deny the state any details about Glock mags in criminal cases. If you have foresight, you can err on the side of caution and get obvious ore bans to avoid the state trying to jam you up. Their lawyers have the same access to info as we do.
Everything anybody wants to know about pre ban Glock mags is on the internet or in books and can be verified by features that were or were not around at certain dates.
There is also the little known tidbits like how 10,000 pre ban mags actually have high caliber markings because they were made as Glock was transitioning to LEO / MIL markings just before the ban. Numerous people have documented that and they even talk about it in the book.
Paying a premium for a pre ban mags is insurance against getting charged for a major felony in Mass. Fully metal lined drop free mags will last forever. My CCW has had the same mag for 10 years. The defensive ammo gets cycled every year but the mag is perfect and the springs don't hardly get used. I feel confidant that I can carry wherever legal and can back up my pre ban mags with documentation from noted Glock historians that they are in fact legal.