Tiny Bolts has a guide on constructing a DIY High Pressure Air (HPA) engine for airsoft, emphasizing on its compatibility with standard electronics and its ability to function without modifying the gearbox. He explains that while an SLA resin printer is necessary to prevent air leaks, the design is less dependent on expensive regulators than other DIY alternatives.

Airsoft Cloner demonstrates a creative, budget-friendly approach to recreating the classic 1990s Delta Force CAR-15 flashlight setup. Rather than hunting down expensive and often underperforming vintage QXL dive lights, he suggests a "we have it at home" version. This DIY project is inspired by the legendary gear used during operations like Desert Storm, proving that looking like a high-speed operator doesn't always require a high-speed bank account.

In this 4UAD Smart Airsoft video, Andrew attempts to build a custom sniper rifle stock for an airsoft KJ Works M700 using basic materials and a modest budget. The project begins with a cardboard prototype to test the ergonomics and overall shape, drawing inspiration from classic designs like the M40. The initial ambition is to stick to simple hand tools, but the reality of working with solid wood soon turns the workshop into a scene of sweat and sawdust.

Airsoft Tec shows his home made full-scale, shell-ejecting model of the MK19 40mm grenade launcher. He fabricates the massive replica from scratch using metalwork, incorporating a motor-driven feeding system, a clutch mechanism, and a working blowback feature using off-the-shelf parts and custom electronics. The finished, non-firing model successfully demonstrates realistic cartridge ejection and mechanical recoil.

If you want to use a guncam that looks like an AN/PEQ-16 box, here is one made by Rummbolt using an already popular action camera that airsofters use... "In case you watched some of my early videos, you maybe remember my self-built PEQ-Box-Scope Cam. Back in the days, I modded the meanwhile quite outdated RunCam 2 camera into an AN/PEQ-15 housing. But during the last months, it has became quite unrealiable, and rebuilding is not really possible because certain necessary parts are no longer availabe.