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Prometheus 6.03 EG Tight Bore Inner Barrel for Airsoft AEG (407mm)

5 Customer Reviews

by David D. on 07/03/2014
"Installed in VFC HK 416 CQB. Increased length of stock by approx 107mm, WOW what an amazing upgrade for relatively little money. The BB's rocket from the barrel like a lazer beam. Haven't chrono'd but dont expect any gains/losses of FPS but overall range and groupings increased a LOT. Just a heads up to any 416 owners running stock VFC hop up.....also purchased purple Prometheus bucking and the bucking will NOT fit. It's too thick. Confirmed with tech this is not a good matchup (prometheus bucking and VFC hop up.) Keep the stock VFC hop up which is good quality and fits perfect. Couldn't be happier with purchase of barrel. HIGHLY recommended. Best $50ish you can spend.
by Brendan V. on 03/05/2009
"for every one who wants to know: IT FITS KWA KM4 Tactical!!! Installed this in my gun and shoots pretty accurate well way more then it was stock. What is shooting some one if you can not hit them, right!?!?!? Well I recomend this cause i think it will make your game play performance alot better and exciting. Matrix .2G BB's work better than Echo 1, KSC and Mad Bulls with this Barrel. Recomended Buy It, Shoot It, Love It!
by Russell H. on 12/11/2008
"tape out the barrel on your gun then go online to a conversion calc and compare to 407mm.
407 mm is 13.0236 inches. for the future us this link
es.htm )))
by Russell H. on 12/11/2008
"i just got this and put it on my tm mp5a4 and it rocks!! my grouping is way tighter range is better and the barrel isnt really picky on the ammo it takes. this is an awesome buy.
by Brad D. on 07/14/2015
"Just for a reference to the above by Russel... 407mm is NOT 13's roughly 16.02 inches.