The rifling does not significantly increase the gun's accuracy spherical projectiles comprising non-malleable materials demonstrate little, if any, accuracy differences between rifled and smoothbore barrels. Although such components do not translate into increased accuracy, they do tend to increase durability. The barrel is rifled steel and extremely thick and rugged for an airgun. The price of the Drozd is much higher than typical 'department store' airguns, partly due to the use of the higher quality components and increased durability. The gun is manufactured by a company that also manufactures and designs military firearms (best known for their WWII production of the Tokarev TT-33 and M1895 Nagant revolver), and many of the parts are thus 'over engineered' with military-style durability. The quality of the gun is high, with the main functional components being made from firearms quality steel and the plastic parts ( trigger, main receiver housings, buttstock, lower magazine cover) being made from firearms quality fiber reinforced polymers. Such modifications include aftermarket/third-party and user-community alterations and upgrades such as 'mod boards' that can increase the rate of fire up to 2000 rounds per minute and provide true fully automatic operation, adapters to use external propellant sources (such as 20 oz paintball CO 2 tanks or HPA scuba tanks), dye kits to change the color (commonly RIT fabric dye is used), and longer barrels (higher velocity). It is popular with both casual target shooters and airgun enthusiasts it is excellent out of the box plus offers customization options and upgrades. The MP661K is best known for being one of the few (if only) select-fire BB guns and can fire single, three-round, and six-round bursts - although in some markets, such as the United Kingdom, only semi-auto is available.

Drozd blackbird fully auto bb gun