NCP Products has manufactured firearms for trap shooting since 1991. Traditionally, guns have been assembled using silver solder, requiring heat for 15-20 minutes at 1100°F. Such high heat can distort and warp a gun barrel, requiring a labor-intensive, hand-straightening process.
It is this hand-straightening that prevents a uniform concentricity from one barrel to the next. This, in turn, may cause different shooting patterns from gun to gun – even from the same manufacturer. Sometimes, a shooting pattern can vary as much as 6-8" in pattern height.
NCP Products Owner, Dennis DeVault, wanted to create an assembly process that would maintain barrel-to-barrel integrity – where every gun he manufactured shot the same pattern.
Working as a member of the NCP design team, Loctite provided the right technology and assembly methods to help them achieve their goal.
Loctite 262 is used to lock the tang bolt onto the receiver, holding the stock to the back of the gun.
NCP Products Trap Guns are fully assembled using designed-in Loctite products, creating barrel-to-barrel concentrity.
Loctite 620 is used to bond the fore end hanger onto the barrel of NCP's trap gun.
In each of these applications, Loctite adhesives must withstand repeated firing, which translates to pressures of 10,000-12,000 psi every time a gun is fired. Loctite products are used both on the mono-block and the fore-end hanger, where peak pressures occur.
In addition to pressures, the gun must go through a bluing bath to produce its black oxide finish. This is an oxidizing process accomplished with bluing salts heated to 300°F for two hours. On bare metal parts, bluing salts can creep and seep into the gun parts and crevices.
Loctite products actually protect the gun, preventing the salts from penetrating its parts.
NCP Owner, Dennis DeVault wanted to test just how well Loctite adhesives really worked. He took three guns completely assembled with Loctite adhesives. After shooting 105,000 rounds, he felt he had achieved his goal of barrel uniformity and concentricity. “I know that every gun I take off the line – whether it’s the 1st, the 50th or the 10,000th – will print the same pattern every single time." In addition, this barrel-to-barrel quality inherently creates a safer gun, says DeVault.