The guys over at QuietBore were nice enough to send me another kit to test and review. This time I requested a 45cal kit with multiple pistons/threaded entrance caps to test their kit on various 9mm and 45cal firearms. I received my approved Form 1 from the ATF for this build and the kit from Quietbore. I opted for the 45 kit so I can shoot both 9mm and 45cal through the kit just like I do with my Rugged Obsidian 45.
They sent me all the different pistons and threaded end caps so I could test this kit on everything I normally shoot my Rugged Obsidian 45 on. That list consists of the following:
7.5" AR 9mm PCC - 1/2-36
7.5" AR 45cal PCC - .578x28
1911 45cal Range Officer - .578x28
Glock 19 9mm - 1/2-28
SIG P229 9mm - 13.5x1LH
The first firearm I planned to test this kit on was my AR9 PCC. This is one of my favorite guns in the safe and the one out of the above list I shoot the most. Unfortunetly, QB didnt have the 1/2-36 piston/entrance cap in stock when they shipped my package. Talking with them earlier this week, they were making more this week and would get one right out to me.
So I will probably just test the SIG or 1911 first, then do the AR9 when the piston comes.
For those that dont have QB's 9 or 45 kits, you can buy them essentially in 2 different configs or buy parts to be able to switch back and forth between fixed barrel and pistol which is how my kit is setup. Essentially, what that means is, your tube is full of cups all the way to the back and you get a threaded SS entrance cap in whatever thread pitch you want to be fired on a fixed barrel rifle like a pistol caliber carbine.
If you want to fire your kit on a pistol, you need to buy the booster pack along with pistons for each thread pitch you need just like any retail suppressor on the market. You then switch pistons when you want to screw your can on different thread pitch pistols like 13.5x1 LH for say a SIG, or .578x28 for a 45, etc.
To install the booster in this QB 45 kit, you remove 2 cups. This kit has 1 SS cup and the rest are aluminum. You always want that SS cup as the first baffle in the stack taking the initial blast out of the muzzle. So you remove 2 aluminum cups then put the SS back in and then screw the booster into the back of the tube. You then drop your piston into the back of the booster, drop the spring over the booster and screw on the back cap to hold the piston into the booster assembly. Youre now ready to screw your suppressor onto your pistol.
Now, the big difference between this QB kit and my other retail pistol caliber suppressors is the retail cans always use a booster housing. It is permanently welded into the tube. When you want to shoot on a pistol you install your piston and spring and your ready to go. When you want to put it on your fixed barrel rifle, you still use pistons, you just remove the spring from the booster housing and you drop in a fixed barrel spacer in place of the spring and tighten the end cap up. This locks the piston in place so it cannot move, which it does not need to on a fixed barrel firearm.
I explain all this, because I will be testing this QuietBore kit both ways on my 9mm PCC fixed barrel rifle. With the tube full of cups and the threaded entrance cap installed. But, I will also test it with the booster housing installed and a piston with a fixed barrel spacer. I picked up a Rugged fixed barrel spacer which fits in this booster housing perfectly but is a tad too long so Ill turn it down to the correct size for this QB housing. You may ask why. Well I want to see if there is any performance difference in both sound reduction, 1st round pop, and accuracy with and without the housing. When the housing is installed, its essentially creating a blast chamber like my other retail suppressors I own. Without the housing and the tube full of cups, there is no blast chamber present. I want to see if there is a difference.
As an FYI, the QuietBore pistol kits utilize Advanced Armament Corp A.S.A.P. Pistons. So you can buy these pistons for your kits from other vendors if you are unable to get one from QB. After my testing, Ill give my feedback to QB on the fixed barrel spacer setup. If there is a performance difference, maybe they can start carrying this part as well and maybe make the booster setup permanent....We shall see.
They sent me all the different pistons and threaded end caps so I could test this kit on everything I normally shoot my Rugged Obsidian 45 on. That list consists of the following:
7.5" AR 9mm PCC - 1/2-36
7.5" AR 45cal PCC - .578x28
1911 45cal Range Officer - .578x28
Glock 19 9mm - 1/2-28
SIG P229 9mm - 13.5x1LH
The first firearm I planned to test this kit on was my AR9 PCC. This is one of my favorite guns in the safe and the one out of the above list I shoot the most. Unfortunetly, QB didnt have the 1/2-36 piston/entrance cap in stock when they shipped my package. Talking with them earlier this week, they were making more this week and would get one right out to me.
So I will probably just test the SIG or 1911 first, then do the AR9 when the piston comes.
For those that dont have QB's 9 or 45 kits, you can buy them essentially in 2 different configs or buy parts to be able to switch back and forth between fixed barrel and pistol which is how my kit is setup. Essentially, what that means is, your tube is full of cups all the way to the back and you get a threaded SS entrance cap in whatever thread pitch you want to be fired on a fixed barrel rifle like a pistol caliber carbine.
If you want to fire your kit on a pistol, you need to buy the booster pack along with pistons for each thread pitch you need just like any retail suppressor on the market. You then switch pistons when you want to screw your can on different thread pitch pistols like 13.5x1 LH for say a SIG, or .578x28 for a 45, etc.
To install the booster in this QB 45 kit, you remove 2 cups. This kit has 1 SS cup and the rest are aluminum. You always want that SS cup as the first baffle in the stack taking the initial blast out of the muzzle. So you remove 2 aluminum cups then put the SS back in and then screw the booster into the back of the tube. You then drop your piston into the back of the booster, drop the spring over the booster and screw on the back cap to hold the piston into the booster assembly. Youre now ready to screw your suppressor onto your pistol.
Now, the big difference between this QB kit and my other retail pistol caliber suppressors is the retail cans always use a booster housing. It is permanently welded into the tube. When you want to shoot on a pistol you install your piston and spring and your ready to go. When you want to put it on your fixed barrel rifle, you still use pistons, you just remove the spring from the booster housing and you drop in a fixed barrel spacer in place of the spring and tighten the end cap up. This locks the piston in place so it cannot move, which it does not need to on a fixed barrel firearm.
I explain all this, because I will be testing this QuietBore kit both ways on my 9mm PCC fixed barrel rifle. With the tube full of cups and the threaded entrance cap installed. But, I will also test it with the booster housing installed and a piston with a fixed barrel spacer. I picked up a Rugged fixed barrel spacer which fits in this booster housing perfectly but is a tad too long so Ill turn it down to the correct size for this QB housing. You may ask why. Well I want to see if there is any performance difference in both sound reduction, 1st round pop, and accuracy with and without the housing. When the housing is installed, its essentially creating a blast chamber like my other retail suppressors I own. Without the housing and the tube full of cups, there is no blast chamber present. I want to see if there is a difference.
As an FYI, the QuietBore pistol kits utilize Advanced Armament Corp A.S.A.P. Pistons. So you can buy these pistons for your kits from other vendors if you are unable to get one from QB. After my testing, Ill give my feedback to QB on the fixed barrel spacer setup. If there is a performance difference, maybe they can start carrying this part as well and maybe make the booster setup permanent....We shall see.
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