ID: 35664 (AC-VSR-SP170)
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Oil Tempered with high pressure treatment Irregular pitch spring for maximum performance. Constructed out of 1st class carbon steel piano wire. Long lasting durability and high performance output.
Angel Custom PSS10 Mega-Up VSR-10 Power Up Spring - SP170 (480~550 FPS)
Where second best, is not good enough!
Manufacturer: Angel Custom
Spring Velocity: 480~550 FPS
Material: First class piano wire / carbon steel.
Compatibility: For all Tokyo Marui, JG BAR-10, WELL VSR-10, MB-03, MB-07, G-Spec, M24, M28, AGM L96, and other compatible bolt action sniper rifles with VSR-10 compatible internals.
"Garbage, hate to say it. I've heard lots of bad things about Angels Custom products across the board minus a few bits and pieces. But I figured I'd give it a try since I needed an SP170 spring for my sniper rifle. Well out of the box I thought hey this is pretty decent. FPS was decent on the chrono about where I suspected it should be with my build. I was able to stretch my range out past 100 yards which was around 25 yard further than I could with my SP150 spring.
Fast forward a few weeks and about 500-1000 BB's later. Well I noticed progressively the bolt handle was getting easier and easier. The rifle was still shooting alright since most of my shooting is 75 yards or so for practice seldom do I shoot 100+ yards. Well today the wind was good and I decided to do some longer range shooting. I wasn't able to get beyond 80 or so yards, The BB's just wouldn't carry enough energy(shooting .43g). So I did some more testing etc to see what was going on, rifle is super consistent just couldn't get the max range I could a few weeks ago with no real changes. Decided to chrono the gun since I suspected the FPS had dropped off along with the easier bolt throw. Keep in mind I shot a few months with the SP150 from a different brand and the bolt throw felt easier than the SP150. So I chrono'd it, and accounting for jewel creep with my short barrel it came out to 400fps with a .2g projectile. Where just a few weeks ago it came in around 530fps with a .2g.
So obviously this spring is either made of a poor material as in a bad grade of spring steel, or the heat treat is bad. One way or the other it's now weaker than a SP150 by a large margin, and a significant drop in FPS. Absolutely not worth buying, I would avoid this spring and I hate to say it but all Angel Custom's springs since I can't imagine they are any better. Maybe I got a lemon but after all the reports I've read, I'd say this is more the normal result rather than the exception.
"Okay so I bought this for my JGm700 and at first it was amazing! Hitting a 12 inch target at about 150-woo feet. But slowly I noticed that the bolt was easier to pull back than it was at first. At first is was very hard to pull back, but now it was way easier for one reason. So my .30gram bbs were not going as far or as fast. So not I'm guessing the fps is somewhere between 380-430 with .20grams. Keep in mind I am using .30's so I don't think the bbs are really the problem.
Hard to bull back
"Great spring with the right equipment with it such as piston & cylinder. I need time to break mine in my JG BAR10. It chronoed around 570.
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