MikeD

I only said the stay clean claims of the KA were not existent in my tests. The KA does slightly increase cycling power. I just don't think the increase is anything close to brag about as increased reliability. It is just too small and most won't see much benifit at all. Also I designed the Booster primarily for those new out of box guns with trouble. It should make the very most of these out of box guns that have ejection problems from the shoulder with the factory piston be able to fire the same stuff from the hip with the Booster. In my opinion there isn't a better show of improvemen

Sorry, I don't think ware will be an issue. I might have close to a couple thousand rounds on one sample and it is completely fine with no signs past rub marks which the factory get as well. Also if it ever does ware out just send it back and we will replace it with a new one. I really don't think that will be an issue though. My thought is if someone fire enough rounds on one to ware it out I'd love to see the end result and they deserve a new one!

well if you actually think the twister puck keeps it cleaner than I will not even bother with your puck, they sent me all three pucks and guess what my little shorty would not cycle with any of them and worse than that after just a hundred rounds it was all gummed up. the factory puck was cleaner than theirs and ran a bit better and the ka puck I have works flawless and I can run hundreds of rounds without having to clean it. Oh man... You mean a guy that wasn't going to buy a Booster piston isn't going to buy a Booster piston? Now I'm worried... Yeah, you should keep using your KA that

I picked 12 people from this thread to test one. You have a PM if selected. Basically everyone that seemed to have troubles. Testing offer closed.

Matt, Neither really do anything for staying clean or running longer. I wouldn't buy one for that reason.

When did you place your order? I ordered on Tuesday and it still hasn't shipped.. What is your order number? It should of shipped the same day you ordered it. The USPS is very lacking in their tracking. More often then not the customer receives an item before the USPS system even updates that they received the package. Usually it just say information was received that a package will be submitted to them for shipping... The closest thing to an order # I could find in the confirmation email was this: Approval Code: APPROVED 338629 Also, I never received a tracking number.

Sorry, I rarely get to my PMs. The best way to reach me is through info@mdarms.com. I was going to disable my PM box awhile back but something kept me from doing so. I think it was because I would lose all past PM records.

When did you place your order? I ordered on Tuesday and it still hasn't shipped.. What is your order number? It should of shipped the same day you ordered it. The USPS is very lacking in their tracking. More often then not the customer receives an item before the USPS system even updates that they received the package. Usually it just say information was received that a package will be submitted to them for shipping...

Actually the diameter isn't a couple thousands bigger. Depending on the tool your measuring with can give inacurate readings. The factory pistons are between .8240" to .8260. The booster will be around .8260" to .8264" A micrometer should be used to measure thicknesses and not calipers. Also the length isn't longer than the factory either. It actually falls in the middle of factory samples I measured. It will probably measure between .010" shorter or longer than a factory piston depending on the factory piston you have. That is about the thickness difference of 3 sheets of 20lbs paper.

well if you actually think the twister puck keeps it cleaner than I will not even bother with your puck, they sent me all three pucks and guess what my little shorty would not cycle with any of them and worse than that after just a hundred rounds it was all gummed up. the factory puck was cleaner than theirs and ran a bit better and the ka puck I have works flawless and I can run hundreds of rounds without having to clean it. Oh man... You mean a guy that wasn't going to buy a Booster piston isn't going to buy a Booster piston? Now I'm worried... Yeah, you should keep using your KA that

For a gun to be considered reliable firing from the hip should be no different than firing from the shoulder. This is a very good example of why the KA shouldn't be advertised as a reliability increaser. Yeah, it might fire from the shoulder but a slight changes takes that all away... Thanks for the order. I am sure you will be firing from the hip now!

The difference is the (poorly) copied areas of my drum where the key features that make it work. The areas you and KA like to think I copied don't do jack for reliability despite the advertising claims they make. But you keep on just looking and don't bother reading to educate yourself on the major difference of the parts and subject. You'll only hamper yourself with that. As far as the buttraping... I have openly said that the Promag drum was a blessing. It allowed me damn good reason to drop the price of the MD-20. The only reason I hadn't before hand is because I didn't want peopl

well if you actually think the twister puck keeps it cleaner than I will not even bother with your puck, they sent me all three pucks and guess what my little shorty would not cycle with any of them and worse than that after just a hundred rounds it was all gummed up. the factory puck was cleaner than theirs and ran a bit better and the ka puck I have works flawless and I can run hundreds of rounds without having to clean it. Oh man... You mean a guy that wasn't going to buy a Booster piston isn't going to buy a Booster piston? Now I'm worried... Yeah, you should keep using your KA that

Guys, You all are welcome to test the Booster side by side with the KA. I sure know I did already. That is why I can very comfortable say the KA doesn't compare. I tried to educate the guys on the AZ forum but most just wasn't wanting to here it. Oh well. You can only laugh at such arrogance when added to ignorance... But like I tried to tell KA there, I can remove the dished ring and finish and the Booster would still just as easily with basically no measurable difference put the KA to shame on increasing reliability. Because like I stated the dished ring and finish aren't the making

WOW!!! I was just informed by Lauren that we just received a very nasty voicemail from King's Armory... It stated that I exactly copied their design and that although I said their design didn't do anything that mine does, among other ramblings. He also stated I was only a couple hours drive away! King's Armory, Are you kinding me? You can openly bash E-Tac on the twister piston but I can't give my opinion on the KA piston? First off I didn't bash, second off if you don't like what I said don't jack up your claims that are so easily called as BS. And to further point out if you re

Sorry, I missed the typos. I fixed it in the original thread. No, it wasn't close to overcoming the missing port.

Mechanically inclined but bordering on computer illiterate... If it keeps giving you problems let me know and I'll have someone that is computer friendly take a look at it. I had to download Internet Explorer and use that to place my order, no big deal. It might be a good idea though to have whoever runs your website look into making it work with FireFox Will do. We reasently rebuilt the store. The guy that did it for us went to school for I.T. but you sure wouldn't know it for as jacked up as our website is. He is no longer with the company... We are going to hire a professio

So far in all guns (not missing ports) it was 100%. Even from the hip!

You nailed it. The concept started about a year ago. I was wondering if by increasing the weight of the piston if it would transfer more energy to the action. We got some tungsten and made a piston. The piston was about 3 times heavier than the factory steel piston. Tungsten is often used as a base metal in counterfeit gold bars and coins because it is so heavy. Anyways... Took it the range to test the cyclic rate in our full auto to compare to the factory piston. Our full auto is already a hot running gun and will fire low brass Winchester bulk pack one handed from the hip no problem with the

Mechanically inclined but bordering on computer illiterate... If it keeps giving you problems let me know and I'll have someone that is computer friendly take a look at it.

I'm currently using the factory puck and plug and my S12 will FTE every time If I try shooting from the hip, but it cycles flawlessly when I fire from the shoulder. Will this booster puck really make that much of a difference? It most definately will. If you can fire from the shoulder with the factory no problem it will definately make your gun fire from the hip no problem with the booster piston. I will dig out some test results and post them. But in brief one new from the box 19inch 3 portgun that had a few ftes from a fully loaded MD-20 with Federal bulk pack from the shoulder would

Correct.

The dished area faces the gas plug. It is just like an AK rifle in that it decreases gas loss around the piston. Both our pistons have this and this feature alone shouldn't be considered a realiability increaser. Although more effecient it makes very little difference on the grand scale. The button's purpose is explained above and has no working function for realiability increase or flow. But yes and thanks for pointing out... Our dished ring is a smooth radius and Laminar flow where the dished areas of the other similar pistons are turbulent flow... The coating on the booster piston

I'm currently using the factory puck and plug and my S12 will FTE every time If I try shooting from the hip, but it cycles flawlessly when I fire from the shoulder. Will this booster puck really make that much of a difference? It most definately will. If you can fire from the shoulder with the factory no problem it will definately make your gun fire from the hip no problem with the booster piston. I will dig out some test results and post them. But in brief one new from the box 19inch 3 portgun that had a few ftes from a fully loaded MD-20 with Federal bulk pack from the shoulder would

I haven't tested this yet. I did test in a 24 inch cut to 19 inches and it couldn't touch the deficencey there. It is hard to say. I will put it on my list to test. If you want to give it a try I can send you a sample.