#AdvancedPrimerIgnition

After a temporary pause in producing video content, Royal Nonesuch is back. This YouTube channel is known for the variety of homemade gun projects. Not only he is back but also plans to start even more entertaining projects. He also applied for an FFL and SOT which will allow him to expand the range of weapons and mechanisms he can experiment with. Among his first new project is a gun utilizing an advanced primer ignition (API) mechanism with an extended chamber. Let’s see how the host of the channel describes his project.

Previously in TFB’s series on weapon operating mechanisms, we examined both the closed-bolt blowback system and the open-bolt API blowback system, two very close relatives that share a common feature: Closure of the breech through the inertia of the breechblock mass alone. What this means for small arms designers is that they must engineer a system where the breechblock is large enough to have sufficient mass, while having enough room to reciprocate the distance necessary for reliable ejection and feeding. In a standard submachine gun design using the API blowback system, for example, the breechblock is configured behind the breech end of the barrel, so that it can reciprocate. This is an easy design to engineer, and can be made simply and easily.