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Old November 4th, 2010, 04:09   #652
ILLusion
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Join Date: Jun 2002
Location: Toronto
Quote:
Originally Posted by intinerious View Post
Hey guys,

I'm from HK and I'm planning to upgrade my MEU. I want to say that reading through this thread is very insightful as to what upgrades are good/bad!

Anyway, I've been searching for reviews of the KM rubber buckings for VSR/1911/MEU and I can't seem to find any.

KM seems to offer 2 types: RH45 (which I assume is the soft bucking) and RH55 (hard). I want to ask whether anyone have any experience with the KM buckings and whether there is a certain range of Joules/FPS for the soft and hard bucking.

Can anyone also provide a comparison between the KM buckings and the Nine Ball purple ones? I've read from other forums that the nine ball bucking provides a better air seal than the stock bucking but some have reported that the nine ball doesn't seem to hop .2g bbs very well. I'm planning to shoot mostly .2g marui perfect hit bbs through my MEU so I would want to upgrade to a bucking that would be able to hop .2g bbs consistently.

Also, does anyone have experience with the firefly buckings? I just did a quick search and most people say you need to file down the 'prongs' inside the chamber for consistency in shooting. I've read mostly VSR threads on this but there are mixed reviews about the firefly.

Also, this thread here says that the ideal gap is .08mm between the bbs and the inner barrel diameter. Does anyone with experience with different tightbores agree with this? I'm hoping to upgrade to a nineball tightbore with a 6.03 mm inner diameter and as I'm shooting marui perfect hit bbs, which are manufactured for a bb size of 5.95mm, and if the ideal gap is indeed 0.8mm, then it'll be the 'perfect' tightbore for me.

Thanks in advance guys!
I tried the KM rubbers, and wasn't totally impressed with them. Performance increase over stock was minimal, but they are made from a very resilient material, which is the main selling point. What bothered me the most about them, was that they seemed to be slightly oversized (the couple that I installed, anyways.) Strangely, I liked using them for AEG's, so I may try using them again in the future, but for the time being, Firefly hop up rubbers are my favorite.

RH45 for <1J
RH55 for >1J

The Nine Ball buckings, in my experience, provide the highest FPS upgrades. MOST hop up buckings are not designed to hop .20g BBs well, mainly because most shooters use 0.25g in modern GBB's. 0.20g is too light, especially at the velocity that GBB's put out these days. Even a brand new Tokyo Marui GBB, straight out of the box, has its hop up set to shoot 0.25g BB. Even the pack of BB's it comes with is 0.25g weight.

As for the 0.08g "ideal gap", my comments about that will be limited, but what I will say is this: If you can see a performance difference between a 6.03 and 6.01mm diameter bore, shooting a 0.20g spherical projectile through a 115mm smoothbore at 10 yards... then you are a god. Seriously.

For what it's worth, I did a similar test comparing 6.03mm vs 6.01mm shooting Marui 0.30g Superior Grade BB's down 7" (182.5mm) barrels at 10 yards, and........ the 6.01mm barrel did better. Barely. Take that for what it's worth.

My opinion on the debate: There is lots of speculation, assumptions, and theories... but very little (or none) scientific quantitative or qualitative data to back up any such claims. They are all exactly that: claims and opinions. Take all that for what it's worth. None of it is empirical (that I've seen so far.)

Quote:
Originally Posted by lontearab View Post
fully noted and I shall act as you advise.
you know anything about "dumper" it's a thing related to spring guide recoil ??
You may be referring to what's called "shock buffers" or "bumpers", which are pretty much different names for the same thing.

The three purposes of such devices are:

1) To absorb impact (reduce stress) between the slide and the frame.

2) They shorten the overall length of the slide stroke, and thus, speed up the slide cycling speed.

3) Some models also "bounce" or "bump" the slide forward to make it return to battery faster. Some brands do this with urethane ("rubber") bumpers, some brands do it with metal springs, but the end result is the same. Using a solid metal or plastic tube to shorten the stroke does NOT do the same thing, as solid materials merely shorten the stroke length. They do not perform a "bump" in the same regard as Pusangani mentioned.

I have not seen any such device in any form mentioned above made by Shooters Design before, but would be interested in seeing what their solution is, if Pusangani would be so kind as to provide a link to this item.

Quote:
Originally Posted by lontearab View Post
5. so that's mean for the floating valve i should stick with the stock ??
Yes, or another brand.

Quote:
Originally Posted by lontearab View Post
i don't get the Xcelerator frame chasis however i ask suggestion from RWA ,they give me 2 option
1. Shooters Design CNC Chassis 5 inch Limited SV (Black)
2. Shooters Design CNC Chassis 5 inch Standard SV (Silver)

what's the different ??
Why didn't you get the Xcelerator frame? I think it would match the SHPD slide quite nicely.

ALL Shooters Design CNC Chassis that I installed (I have installed 4 before) require the exact same modifications. I tried two "standard" chassis, one 5" "limited" chassis, and one 6" "limited" chassis.

The difference between "Limited" and "Standard", is that "Limited" has long dust cover. Also referred to as "LDC", or "Block Cut". It is longer to match the muzzle of slides that do not have a scallop cut. The SHPD slide does not have a scallop in it, so I would recommend getting either a Limited frame, or the Xcelerator frame, which is basically a Limited frame with fluting. The fluting is for style. It is not ideal for a combat/skirmish/tactical weapon, as it can snag on things. It is a personal preference, though. Some (few) people like the look off block cut slides on standard frames. I do not. Some people like the idea of using block cut/LDC/Limited setups as skirmish weapons. I do not. I find them difficult to holster in most combat holsters.

In the end, it is a style preference, and up to you which one you want to go with.

Last edited by ILLusion; November 4th, 2010 at 04:13..
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