Caseless ammunition - Wikipedia
Cartridge (firearms) - Wikipedia
Why can't the aft cap on tank rounds be made out of combustible material? - Quora
Heckler & Koch G11 - Wikipedia
What is the next evolution of the bullet? Will we just keep making cased ammo more effective? Or will we invent a new firearm with an entirely different type of ammunition than
Has buckshot been perfected? I feel like the innovation with different materials and exotic rounds could still be messed with. What is your opinion? - Quora
308 SCA, Gun Wiki
Caseless ammunition - Wikipedia
What is telescoped ammunition? - Quora
ArtStation - NBW caseless ammunition pistol
Is there any new gun innovations, such as bullets or firing mechanisms? Are we content with just bullets and firing pins? - Quora
What gun can use a variety of gun ammunition? - Quora
Heckler & Koch G11, Military Wiki