Description
Magpul PTS Masada AEGs are perfectly fine out of the box but part of their charm is their upgradability a factor that is indeed by which most AEGs are judged in the long term. They are readily available with both the full length 14.5 inch barrel (380mm inner) and the shorter 11.5 inch (318mm inner) CQB version. These inner barrels are not just the right size they are *specifically* designed for the Magpul PTS Masada AEGs.
Prometheus is a high end brand manufacturer of aftermarket parts with special focus on enhanced performance. Their inner barrels are well established as being a top tier choice for tightbore inner barrels.
While 02 and 01 barrels achieve top performance they require the use of premium Japanese brands only (like Excel) as non-premium non-Japanese brands tend to have slightly larger BBs which can jam in 01 barrels and cause problems in 02s.
With an inner diameter of 6.03mm it is a tighter fit on ammo then most stock varieties (which are in the 6.05+ range mostly) but still not as tight as 02 or 01 barrels making them easier to work with. 6.03mm is generally considered the sweet spot for combat weapon as its tight enough to achieve some performance improvement yet loose enough to accept common ammo types.
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