This is an ultra-realistic 1-1 scale model of the M67 fragmentation grenade with M213 fuse used by the U.S. and Canadian military, among militaries of many other nations. It is an enhanced version of the M33 grenade which preceded it, and was introduced in 1960. It was distinguished from the M33 by an improved fragmentation matrix that was so highly classified, the grenade was not issued to Soldiers fighting in Vietnam until 1968 for fear they would reveal the fragmentation technology to the enemy. There's your trivia for today.

I modeled this off a dummy grenade from a military surplus store which was not as realistic as I liked, and made corrections using multiple reference photos. Given the fact that I don't have access to live frag grenades to use for 3D modelling, I can't guarantee the parts of this model are interchangeable with the real grenade (although I don't recommend you mix 3D printed parts with live grenades anyway). All parts are interchangeable with my model of dummy grenade. Additionally, this is a model of the pre-2015 version of the M67 that is not equipped with the 90-degree confidence clip that serves as a third safety device on the modern grenade. These pre-2015 grenades are still issued, and will continue to be “current gear” until the stockpiles are depleted.

The grenade body is hollow and can be used as a storage box for small items or filled with sand to weight the grenade to the correct 14oz. the two halves of the body screw together at the center seam and there is an additional hole where the fuse screws into the upper body. I had to do a bit of finishing work to the body halves to get a tight fit, but this only took about 5 minutes with a hobby knife and sandpaper. The safety clip (silver in the images) is not included in the file, I made it using about 2/3rds of a large paper clip using reference photos.

As usual with my munition models, this is a highly accurate model that could be mistaken for a real munition if brandished in public. Be smart and be kind. If you're going to use this for cosplay in public, you can reduce (but not eliminate) potential problems by printing the grenade body in blue, the universal color for an inert munition. For display, the entire grenade is OD green with black markings, except for the collar (the 2mm lip at the top of the upper body), which is a burnished brass color.

The grenade can be verified as inert without removing the pin by looking through the holes at the top of the fuse and verifying that a striker assembly and spring is not present.

If you like this model, I'd appreciate a like! I'm working on other munitions models, but the price of inert grenades is definitely a limiting factor, so if you're looking for somewhere to use your boost tokens, the savings on material costs (15-20 prototypes per upload) would go a long way towards the purchase of reference models. Now that the shameless begging is over, please enjoy and stay tuned for more!