|2-tube Blow-back BasicsHow 2-tube blow-backs function with animated graphics
||Modern Tippmann ValvesHow valves in Tippmann’s Model 98 and A-5 function with animated graphics
||How Nelson Guns workDetails on how pumps based on the Nelspot 007 function
|Blow-back LP FAQAnswers to frequently asked questions concerning blow-back low pressure operations
||X-Chamber/Regulator FAQFrequently asked questions about expansion chamber and regulators
||Coolest Gun in the WorldA Line SI Bushmaster pump converted into a bolt-action rifle.
|Balancing Blow-backsHow to blance the needs between velocity and re-cock
||The Gun From HellA Nelson based pump with a WGP autococker kit
||How to port a barrelHow to put a pattern of holes in a barrel using a simple drill press.
|PT Enforcer VelocityHow to improve the velocity on the PT Enforcer blow-back pistol
||Breech Loaded CannonA cannon designed for eliminating armored vehicles in scenario games
||Cheap Home-made StuffIdeas for home made projects that don’t cost much
|The Trials of CLovisMike Young’s low pressure and cosmetic changes to a stock Spyder
||BECC jr.The smaller version of the breech loaded cannon.
||Line SI PromasterThe saga of an early problematic blow-back