WIDE BORE barrel, 6.1+mm, CAR15, P90, SG552, G36C, 247mm, PDIPrecision steel 6.1+ mm inner barrel PDI series of WIDE BORE for type of weapons CAR15, P90, SG552 and G36C - length 247 mm. On numerous requests PDI company began producing and especially those with a larger inner diameter to better stabilize the ball to "air cushion". Achieve better accuracy and trajectory can be viewed as a necessary loss of performance. Upgrade part is also applicable to other AEG weapons with similar or shorter length inner barrel and a standard type hop-up chamber/bucking. Very accurate and hard steel barrel STKM13C.
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Very accurate and hard steel barrel STKM13C. Steel barrel has undergone a specially made prpcess, which also leads to specific dark color. The precision surface coating of material gives to the final product resistance under corrosion as well as very high hardness. Like stainless barrels PDI is these produced by use of the cold forging, which is also used for producing the barrel of guns. This is the precision production of Japanese manufacturing tolerance +/- 0.007 mm.
Precision inner barrel is part of the upgrade, which together with the appropriate Hop-Up bucking significantly affects the accuracy and partially overall performance/range weapons. The smaller inner diameter, thus inevitably results to better tightening of BBs. At the same time, however, higher demands for regular cleaning and using only quality airsoft BBs (we recomend BBs from BLS). Otherwise, it may lead to a reduction of muzzle velocity as well as accidental or "suffocation," of the whole weapon. If you choose a barrel please do not make decision only according to the inner diameterand the lowest price. An important factor is also the procedure and method of production, the type of finishes, materials and the manufacturer and country where it was made.