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But what does it take to install this barrel? Well, highlights from instructions to install the aftermarket barrel include: gripping the stock barrel's threads with needle nose pliers, holding the gun in just a manner such that it does not fall apart when the barrel is removed, and keeping the magazine installed during the barrel-swap or else an internal part comes loose which then requires the Drozd's complete disassembly to fix.
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A longer barrel will improve the airgun’s muzzle velocity and potentially accuracy. The 'easiest' and most readily available Drozd modification is an extended barrel. Whatever the reason, allow me to continue into the frustration of modifying a Drozd. More logically I would need to blame the Drozd’s difficulty of modification rooted in the designer’s need to make the airgun safe and affordable… respecting the component design, manufacturability, assembly time, material selection, packaging size, liability insurance, and regulation compliance which are all relevant to a product’s retail cost. Of course I cannot prove that assertion, nor do I even have enough data to effectively argue it. After studying the device for some time, I almost want to say the Drozd was designed specifically to limit a customer's ability to modify or improve the airgun. The modifications require great skill, intimate knowledge, or extensive cutting/drilling/removing plastic. Admittedly, there are many 'hacks' to improve the Drozd, but they are exactly that- hacks. The most frustrating problem I have with the Drozd is it's difficulty to modify.