MAJ MALFUNCTION
01-28-2008, 08:42 AM
Q: What is First Round Pop (FRP)?
A: "First round pop" (FRP) refers to the slightly higher level of noise that you'll hear from your suppressor on the very first round you fire through it. FRP occurs mainly because of the oxygen that is inside the suppressor when the first shot is fired. The oxygen allows the powder that is propelling the bullet to continue to burn through its explosive cycle to maturity. The suppressor will trap much of the gasses produced in the first shot, which results in an oxygen deprived environment that will help control and shorten the explosive cycle of subsequent rounds.
Q: What does it mean to fire a silencer "wet" or "dry"?
A: Most silencers are designed to fire "dry" (no fluid inside the can). But you can achieve slightly better performance from your suppressor if you use it "wet". Placing a small amout of water (only a soda bottle cap full) or gel inside the suppressor will usually reduce the volume of a suppressed gun shot an extra 10db. The fluid cools the explosive gasses through an endothermic reaction (as the heat of the blast enters
the silencer some of the fluid will vaporize and this transfer of the fluid
from a liquid to a vapor absorbs heat). This cooling effect transfers energy
from the blast, which results in lower pressure and less perceived noise.
It often changes the sound of a suppressed gun shot from a metallicy
"ting" to more of a dull "thump". The fluid will burn off after 2-3 magazines
of use and need to be replaced. Water works well (and the price is right), but
will dribble out of the end of the suppressor if you're not careful. Gel is much easier and convenient to use. You can purchase "wire pulling gel" from most home centers (it will be in the electrical aisle). Its around $5 for a large 1 quart bottle (see picture).
Q: What is a booster (aka Nielsen device)?
A: A booster, or "Neilsen device" is a mechanical device located at the rear of most handgun suppressors. Its purpose is to ensure that semi-auto handguns will properly cycle the next round after firing. Without a booster, most sem-auto's will have difficulty feeding the next round into the chamber. Malfunctions (failure to eject, stove pipe, failure to feed, etc.) occur because the extra weight/mass at the end of the barrel will slow/impede its movement as it travels out of battery. The booster helps overcome the suppressor's added weight on the barrel by using the explosive blast (as the bullet clears the end of the barrel) to help push the barrel backwards, out of battery.
A: "First round pop" (FRP) refers to the slightly higher level of noise that you'll hear from your suppressor on the very first round you fire through it. FRP occurs mainly because of the oxygen that is inside the suppressor when the first shot is fired. The oxygen allows the powder that is propelling the bullet to continue to burn through its explosive cycle to maturity. The suppressor will trap much of the gasses produced in the first shot, which results in an oxygen deprived environment that will help control and shorten the explosive cycle of subsequent rounds.
Q: What does it mean to fire a silencer "wet" or "dry"?
A: Most silencers are designed to fire "dry" (no fluid inside the can). But you can achieve slightly better performance from your suppressor if you use it "wet". Placing a small amout of water (only a soda bottle cap full) or gel inside the suppressor will usually reduce the volume of a suppressed gun shot an extra 10db. The fluid cools the explosive gasses through an endothermic reaction (as the heat of the blast enters
the silencer some of the fluid will vaporize and this transfer of the fluid
from a liquid to a vapor absorbs heat). This cooling effect transfers energy
from the blast, which results in lower pressure and less perceived noise.
It often changes the sound of a suppressed gun shot from a metallicy
"ting" to more of a dull "thump". The fluid will burn off after 2-3 magazines
of use and need to be replaced. Water works well (and the price is right), but
will dribble out of the end of the suppressor if you're not careful. Gel is much easier and convenient to use. You can purchase "wire pulling gel" from most home centers (it will be in the electrical aisle). Its around $5 for a large 1 quart bottle (see picture).
Q: What is a booster (aka Nielsen device)?
A: A booster, or "Neilsen device" is a mechanical device located at the rear of most handgun suppressors. Its purpose is to ensure that semi-auto handguns will properly cycle the next round after firing. Without a booster, most sem-auto's will have difficulty feeding the next round into the chamber. Malfunctions (failure to eject, stove pipe, failure to feed, etc.) occur because the extra weight/mass at the end of the barrel will slow/impede its movement as it travels out of battery. The booster helps overcome the suppressor's added weight on the barrel by using the explosive blast (as the bullet clears the end of the barrel) to help push the barrel backwards, out of battery.
