DIMS: Weapon compartment: 8" tall X 7.5" wide X .5" deep (averaged since tapered)
Main compartment: 7.5" tall X 7.5" wide X 3" deep
Secondary compartment: 6" tall X 6" wide X 1.5" deep
Looks like TT was feeling crafty and decided to take a stab at making their own CCW shoulder bag. My first impressions of the Crossfire are that it is lightweight and most of the holding space seems to be depth rather than the other dimensions. The adjustable shoulder strap comes with a pad that is a nice mix of non-slip and breathable mesh. On the back of the whole pack is a large dose of mesh with padding to help with comfort and airflow. As with most meshes of this style, keep hook velcro away from it as it will tear its ass on up! For extra mounting options there is PALS webbing on the upper ends of the platform and on the sides of the compartments. They aren't huge so only expect to attach pouches that fit 1 PALS channel x 2 rows. Making good use of the side PALS, Duraflex Slick clips are used to attach a removable waist strap to assist in securing. Hence the removable aspect, you can just take these off if you don't ever see yourself using them.
For compartments there are 3 main areas:
In the back is the mostly flat weapons compartment. The shape is tapered like the general shape of the pack which helps for getting goods in and out. I certainly wouldn't call this a speed setup however since there is a large rain flap covering the zipper which is only a single slider. I can understand the single slider to maximize compartment opening space, but the rain flap can get in the way if you are in a rush to get to your blaster. TT chose to include the rain flap to hide this compartment zipper in consideration that speed draw capability was not intended. Inside is a loop velcro field with a webbing / velcro based universal holster. It is a nice bonus that the holster comes with the Crossfire standard. It can be setup to favor right or left handed folks and add a little angle to assist in a weapon draw. This area was made for small to medium pistols so a compact class pistol fits well. For testing the limit I was able to fit my full size Sig P226 inside, yet was snug for sure. As an extra attention to detail, pleats are incorporated into the frontal side of this compartment which gives nice room expansion when raming your hand down in there to grab your weapon.
The middle compartment is the largest for holding general gear. Inside, things are simple with a bonus mesh sleeve pocket for organization. This area has a double zipper opening and on that note all zippers on this pack are reverse style giving a clean look with added water resistance. Having loop velcro on the interior back of this compartment would have been nice to allow holster capability.
Finally we get to the frontal pocket which is smaller, but setup for more organization. A good strip of 1" elastic is included with 4 divisions originally intended to hold pistol magazines. This size also works well for tools and flashlights. A large webbing ring is up top for a nice connection point and sleeve dividers are attached to the back area to hold pens, papers, and such. Double zippers are used for the opening again and on the exterior is a shock cord / cordlock rig for lashing down items.
To cover some other small cons The D-rings and slick clips could come in tan rather than black. The "Multicam/Tan" color is somewhat odd where the front pocket exterior is tan rather than multicam while being the most visible area. I have concern those who want multicam will feel somewhat jipped and those who wanted a solid color will not be fully happy either. Design intent wise this color option is offered to give a middle ground look of style without looking too military. For those who like solids, they also offer black and ranger green/black. The bottom line; this is a well built pack that accomplishes its design goals. If one wants to optimize the speed of the weapons compartment, I recommend cutting off the rain flap and making a beefy pull cord for the zipper.