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CDN_Stalker · August 27th, 2007, 14:04

PDI 150% sping will put out between 340fps and 440fps, depending on which batch you get. Avoid at all costs, just get a good Prometheus spring, a 110 or 120 and you won't have to deal with any surprises. Also, your rate of fire will suffer. Case in point, one of my MP5s has a 150% in it powered by an 8.4V 3300mAh battery (has a bearing spring guide and longer barrel, used to shoot 385fps), and my other has a Prometheus 110 spring in it (chronied at 365fps) and even when powered by an 8.4V 600mAh battery, had close to double the rate of fire.

Incidentally, I have a good PDI 150% (meaning 350fps) in my main MP5, have had it for about three years, it blew my stock mechbox after two months. Put in a Hurricane reinforced mechbox, after two years it blew that one too. If you get a bad 150% (75% of them are these days) it'll blow real easy, even if you have the silent piston head.

Don't take chances with PDI springs, no matter what gun you are putting it in (PDI 300% nearly destroyed my CA M24 as well).

August 27th, 2007, 14:04	#12
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	PDI 150% sping will put out between 340fps and 440fps, depending on which batch you get. Avoid at all costs, just get a good Prometheus spring, a 110 or 120 and you won't have to deal with any surprises. Also, your rate of fire will suffer. Case in point, one of my MP5s has a 150% in it powered by an 8.4V 3300mAh battery (has a bearing spring guide and longer barrel, used to shoot 385fps), and my other has a Prometheus 110 spring in it (chronied at 365fps) and even when powered by an 8.4V 600mAh battery, had close to double the rate of fire. Incidentally, I have a good PDI 150% (meaning 350fps) in my main MP5, have had it for about three years, it blew my stock mechbox after two months. Put in a Hurricane reinforced mechbox, after two years it blew that one too. If you get a bad 150% (75% of them are these days) it'll blow real easy, even if you have the silent piston head. Don't take chances with PDI springs, no matter what gun you are putting it in (PDI 300% nearly destroyed my CA M24 as well). __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871 Last edited by CDN_Stalker; August 27th, 2007 at 14:06..