Building A Competition Airsoft Pistol

[ILLusion]

Originally Posted by hattrick

Tm hi-capa 4.3 shorter cycles than the 5.1, just as accurate cheap easy reliable.

A 4.3's stroke length is exactly the same as a 5.1. The lighter weight is what allows it to cycle faster.

[Daiviet]

5.1 has a longer inner barrel though, so better accuracy.

[ujiro]

Yeah. Is it a noticeable increase in accuracy though?

I'll stick to my 7" PDI barrel in terms of accuracy though..
But nonetheless am interested in knowing whether or not the 5.1 does actually have any accuracy advantage over the 4.3

[pusangani]

If you want your 5.1 to cycle faster, you can short stroke it by using a 4.3 recoil spring, or use 2 of ILLusion's shock buffers, this will remove the ability to lock back on empty but the gun will cycle alot faster.

[ILLusion]

You can fit up to three shock buffers in for maximum short stroking effect. Increased recoil spring strength will also do this.

You can also do things to lighten the slide, such as milling speed holes in to it and installing super light weight blowback units (The Nine Ball one is the lightest on the market.)

[RacingManiac]

Originally Posted by ujiro

Yeah. Is it a noticeable increase in accuracy though?

I'll stick to my 7" PDI barrel in terms of accuracy though..
But nonetheless am interested in knowing whether or not the 5.1 does actually have any accuracy advantage over the 4.3

There is the additional benefit of longer sight radius with the 5.1 that might help shooter achieve better accuracy...and in gas gun(much as real gun) longer barrel is always more power.

I think the actual realworld result is probably not that different......

If you are planning to do a custom build, realistically starting from either isn't that different. The best for all world probably is a short slide with long barrel with a comp so you get the benefit of long barrel and reduced moving mass to throw off the shot...

[hattrick]

Originally Posted by ILLusion

A 4.3's stroke length is exactly the same as a 4.3. The lighter weight is what allows it to cycle faster.

But the 5.1's stroke length is exactly the same as the 5.1!


:P

[ILLusion]

Originally Posted by hattrick

But the 5.1's stroke length is exactly the same as the 5.1!


:P

Doh!

Dealing with a crazy head cold. Head... foggy...

Corrected.

[m102404]

Originally Posted by ILLusion

You can fit up to three shock buffers in for maximum short stroking effect. Increased recoil spring strength will also do this.

You can also do things to lighten the slide, such as milling speed holes in to it and installing super light weight blowback units (The Nine Ball one is the lightest on the market.)

HA! i'm not the only one who calls them that!!!

You can short stroke pretty much any pistol.
Reason:
- minimize the time the slide spends moving unncessarily...only minimal movement for recoil/chambering is preserved.

Benefits:
- faster shot-to-shot times...pistol is chambered and ready to fire as quickly as possible
- ***subjective???*** I tend to notice that the muzzle doesn't jump so much off target...or at least I'm back on target quickly. Perhaps it's more so that the impulse of the recoil is sharper and counter acted by the slide chambering quicker.

Ways to do it:
1. Short stroke spring - this type of recoil spring has more coils spaced so closely that they will essentially jam and not let the slide recoil past a certain point.
2. Spacer - I machine my own out of a piece of UHMW plastic. Fits just over a the guide rod and is big enough for the recoil spring to seat on.
3. Spacer kits - AS/Illusion sells the kits that are essentially metal washers and rubber washers. It is essentially that the rubber is in between metal plates...since if the recoil spring is in direct contact, the recoil will eventually cause the spring to cut through the rubber.

Have fun!

[RacingManiac]

You can also run heavier rate spring....FYI, in Hi-Capa's case I am running the Airsoft Surgeon recoil spring(as-is) in the Limcat and its heavy enough that the blowback force cannot overcome the spring rate to go to full stroke. But you can pull it to lock...personally I find that is easier to show safe and still get the desired short stroking effect...

What else can you call the speedholes? Homer Simpson used it means its now in popular domain...

[Ronan]

Urgh you guys making me want one of those fancy speed pistols... DAMN they look nice!

Maybe after my latest craving i'll throw some money at those.

[Old School Punk]

Hey thanks for all the responses guys, you Rock!

So here is a real stupid "Noob" question for ya all, is there such a thing as a real steel Hi-Capa pistol?, and if so who makes it?

I always thought the Hi-Capa was basically a modernized Colt 1911, but I can't seem to find any info backing that up on the Internet?

I suspect someone here can set me straight in like 2.5 seconds, so I figured I would ask.

Gordo

[m102404]

Google STI handgun

[RacingManiac]

http://sviguns.com/

[ILLusion]

Originally Posted by m102404

Ways to do it:
1. Short stroke spring - this type of recoil spring has more coils spaced so closely that they will essentially jam and not let the slide recoil past a certain point.
2. Spacer - I machine my own out of a piece of UHMW plastic. Fits just over a the guide rod and is big enough for the recoil spring to seat on.
3. Spacer kits - AS/Illusion sells the kits that are essentially metal washers and rubber washers. It is essentially that the rubber is in between metal plates...since if the recoil spring is in direct contact, the recoil will eventually cause the spring to cut through the rubber.

I prefer the Airsoft Surgeon rubber buffer option ones the most, as the rubber buffer does absorb a lot of the recoil. The recoil spring does not rest directly on the rubber... it rests on a metal washer, so there is no worry of the spring cutting in to the rubber.

This concept was taken directly from Wilson Combat, who offers these rubber buffers as a performance upgrade option. The original idea is to save the frame from the slide bashing in to it repeatedly:

http://www.wilsoncombat.com/a_shokbuff.asp

Originally Posted by Old School Punk

So here is a real stupid "Noob" question for ya all, is there such a thing as a real steel Hi-Capa pistol?, and if so who makes it?

Gordo,

The Tokyo Marui "Hi-Capa" is based off the "2011" platform, which is similar to the 1911, except it uses a split frame design (grip/trigger guard portion is separate from the receiver), and it uses wider (high capacity) double stacked magazines.

Some of my favorite manufacturers include:

www.stiguns.com
www.sviguns.com
www.brazoscustom.com
www.limcat.com
www.shueycustom.com

The operation is pretty much the same, between the 1911 and the 2011. 2011's are widely preferred in the competition world, due to their higher capacity magazines (even a high capacity extended single stack mag can't beat a standard 2011 magazine when it comes to ammo count.)

Also, because of the split frame design, the variety of grip to receiver variations are exponentially higher than with the standard 1911 design.