While I was watching this movie, I was not sure if I liked it or not. There were a number of things about it that were intriguing, but it also seemed to be taking a long while to get to the point. I like a Slow Burn, after all I grew up on the films of the '70s, where everything was a Slow Burn. Weapons however, seem like every time it got to second gear it downshifted again. The reason for this is the storytelling structure of the film. In the end I've come down on the side that this is a terrific way to tell the story and I should get over my occasional sense of impatience.
I don't think it gives away too much to tell you that the story is told around six distinct characters. Also the narrative path is a little bit like memento, where the previous sequence means more after we've seen the follow-up sequence. Stories are interlocking, but they rarely repeat the same Beats. There might be a brief moment or two, that is repeated in each of the sequences, but for the most part they stand alone and give us the kind of context that make the events feel more real and a heck of a lot more interesting.
Julia Garner, Josh Brolin, Alden Ehrenreich, and Benjamin Wong, are all terrific in their roles as players in this horror scenario. As an unjustly maligned teacher, Garner is sympathetic but she is also not perfect. Her flaws make her a better protagonist. The only character who doesn't have an obvious flaw is Benjamin Wong, as the school principal Marcus. He is the epitome of an effective principal would be like. That of course makes it particularly disturbing when we see the first truly horrific scene in the film. Up until the part where Marcus loses it, our main horror element was dread. When the turn here takes place, it is fear and revulsion that take over.
There is a major character in the story that I'm not going to talk about, because it feels like it would be a spoiler. Although seen around the edges of two or three of the opening sequences, it is only when this character steps into one of those stories openly, that we start to figure out what the hell is going on with the children who have vanished. 
Director Zach Cregger, who previously made the film Barbarian, has interesting ideas and fun Concepts in his stories. And well they are admirable I'm not going to buy into the hype that these films are exceptional. There are still narrative problems, and inconsistencies, but Cregger does have the ability to direct the film well enough to distract us from those flaws , and still deliver something highly entertaining to watch.
For the first two thirds of the film this feels like a melodrama, posing as a horror film. Once we get to the final character story, The Narrative plays itself out straight, and the usual horror elements do appear. The climax of the film does feature several deaths, and disturbing images, and surprisingly a little bit of Hope for some of the characters who are left. I do need to say however that the film starts off telling us a lie, which distracts us from what's really happening, and then ignores the lie at the end of the film. As long as you don't mind being Hoodwinked into seeing a film that is not what is advertised in the opening moments, weapons will satisfy your Jones for a summer horror flick. It's not perfect, but it's pretty darn great.
