I modified previous concept of shotgun ammo pouch a little and moved to more traditional design with horizontally oriented tray and vertically oriented shells. Prototype with vertical tray and horizontal shells was less protected from weather and dirt, than I prefer.
Now the outer pouch is solid box structure with foldable lid and velcro on frontal surface. Note: pouch fastener is not installed yet, and new pouch is NOT fastened with velcro (frontal side of lid and frontal wall of pouch are not sticked together) due to the noise discipline reasons.
Lid is collapsing flat and secured in this position with inner velcro, look at orange and purple markings on a photo.
Tray is pulled away:
…and sticked to the velcro:
Second tray is ready to deploy, then first one will be unsticked and pushed into pouch:
The “know-how” of a concept is tray design. There is inner elactic cord into the tray, attached to the bottom of pouch. Unfinished tray with no velcro sewn on:
View from the rear side of a pouch, back wall and lid are not attached yet:
Both trays are visible:
The bad thing about current prototype is – velcro on one tray sticks to the elastic loops on another tray, hurting it.