Speed Cube thoughts?

scottMO

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Mac jack / speed cubes are def stupid fun. May not be the best option for new shooters though. I had to use new mags as my older mag (springs) couldnt keep up with the ROF.
 

GunsCarsPlanes

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Good point on safety for new shooters and the mag spring. I'm already leary on letting anyone shoot the gun with the front end being so short.
 

skoda

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I made one and use it on rare occasions. It's stupid fun to shoot with. I don't think that shooting with one is any more dangerous that shooting a stock gun which is too fast itself. Teaching new shooters proper handling technique is your best defense against an accident. And as the guy in the Mc Q gun store scene said, "The silencer makes a nice handle".
 

Gaujo

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I wouldn't give a stock M11a1, M10, or M11/9 to a new MG shooter without at least the supppressor on it. It's too natural to put your hand out front. I like to let people shoot the max-31 full size first, but anything with a VFG, or some kind of grip is good. I want to get a mac jack now. Would it work on the 31?
 

GunsCarsPlanes

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They are awesome. My Mac Jack is almost always in this upper.
hahah yeah I'm ordering one

I want to get a mac jack now. Would it work on the 31?
I'd get an official "yay" or "nay" from Mr. Lage himself on that one. The VBS speeds up the 31 but has a ceiling, maybe the device would take the ROF to the next level but I'm guessing and that's DEF not something you wanna do when you're dealing with 1.) firearms & 2.) something so expensive
 

Homer

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If my math is right...
1700 rnds per min
28 rnds per second
.30 per bullet is only $510 per minute of trigger time. Probably won't wear out the gun shooting with a speed cube
 

Kkontx

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I wouldn't give a stock M11a1, M10, or M11/9 to a new MG shooter without at least the supppressor on it. It's too natural to put your hand out front. I like to let people shoot the max-31 full size first, but anything with a VFG, or some kind of grip is good. I want to get a mac jack now. Would it work on the 31?
The mac jack or speed cube should do the same thing as the VBS buffers from Lage. They both just short stroke the bolt. VBS gives you the option to put in one to three buffers which will increase ROF for each one added. The max31 has a heavier bolt than a stock m11/9 which will slow the rate of fire down. Adding the VBS or cube won't get you to 1700 rpm on that upper due to bolt weight.
 

boomer535

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This shortens the stroke of the bolt and adds stress to the welds in the backplate of your registered receiver. Why risk damaging your valuable transferable Machinegun for a higher rate of fire just to impress people? Just my opinion.
 

GunsCarsPlanes

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risk damaging your valuable transferable Machinegun for a higher rate of fire just to impress people? Just my opinion.
That's what I did not want to do; stress something so expensive. I am new to the nfa scene and the post was intended to see what people with your level of expertise would say.

Thanks for commenting.
 

A&S Conversions

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That's what I did not want to do; stress something so expensive. I am new to the nfa scene and the post was intended to see what people with your level of expertise would say.

Thanks for commenting.
Yes, I get that the subguns have a high market value. Most owners would agree that they don't want to do anything to negatively effect the value of their subgun. From my perspective, the actual value is from the fact the firearm was entered into the NFA as a machinegun before May 19, 1986, therefore is a transferable machinegun. So to me, that paperwork is the reason why the subgun is worth thousands of dollars. So as long as the serial number and the rest of registration information is still on the receiver, receiver repair should not be an issue.

There have been many members over the years that have posted that they have shot thousands of rounds and have not had an issue with a speed cube type of cyclic rate increase device. While others ended up pounding the back of the receiver and caused the back plate of the receiver cracked. The man who I know that has been repairing these guns for over 20 years, Sam Schneider of Practical Solutions. If you are concerned, that is who I would ask. It is my understanding that a speed cube is not the best choice for longevity. But if that is what you want to do, roll the dice. If the back plate cracks, send it to Sam and get it fixed.

For me, my focus is slowing down the cyclic rate, not speeding it up. Like the US government, I feel that the factory cyclic rate is too fast already. Using 3 to 5 rounds at a minimum of rounds per target/trigger pull is a lot of ammo to use per target. Lage Manufacturing uppers and CF(W) bolts for the M11 family make these subguns easier and safer to use, in my opinion. Congratulations on the transfer of your subgun.

Scott
 

skoda

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Spot on there Scott. Sam would probably know more than anyone if speed cubes do significant damage, what that damage is, and what it takes to repair the damage.

From my shooter's perspective, speed cubes are fun but they aren't something that MOST people would use most of the time. A stock upper shoots too fast. Adding the cube makes it ridiculously fast but fun in it's own crazy way. BUT it's the kind of fun that gets old quickly. After a few mags I'm usually looking to go back to my CFW bolt. The same with the stock steel bolt. 600-900 RPM is just the best range for most guns for most people.

Don
 

Gaujo

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This is one of the very very few things that is both really expensive and super durable. Even if your house burns down, most of your guns and other stuff will be ruined, but that receiver is likely to be intact or at least repairable. I wouldn't shoot thousands of rounds with it, but I think it's fine to mess around with. Worst case scenario you break the back welds which is no big deal to get fixed. This is a bit like buying a Porsche and being afraid to use up the tires. Actually the truth is it's more like buying a Miata that's easy to repair and then being afraid to break it.

Right Jake? Is the MAC the Miata of subguns?
 
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A&S Conversions

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To be clear, speed cubes are really for the M11/NINE. The room between where the sear notch is in the bolt and where the back of the bolt would strike the standard buffer is not very far in the M10 and a M11A1 (original M11 size) receivers.

Scott
 

skoda

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To be clear, speed cubes are really for the M11/NINE. The room between where the sear notch is in the bolt and where the back of the bolt would strike the standard buffer is not very far in the M10 and a M11A1 (original M11 size) receivers.

Scott
Correct but I bet that a thinner version would 'work' for the shorter MACs. I wonder what an M-11 would do with a slim speed cube. Could one get into minigun ROF's? Maybe I'll cut down one of my home made cubes...............
 

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