How to Make the Crosman 1377 More Powerful

11 mins read

Last Updated on September 16, 2022

The question arises, how to make the Crosman 1377 more powerful? There are three basic ways to accomplish this. These are: Scope, Modifications, and Upgrades. Listed below are some examples of these upgrades. Depending on your needs, these modifications can be as simple as adding a better trigger, or as complicated as installing a new piston. In either case, there are many options available to choose from.


If you’re looking for a reliable, accurate, and highly accurate airgun, then you should consider making the following modifications to the Crosman 1377. A hammer debounce device can make this airgun more powerful. Aftermarket breech and piston rods make it easier to pump. A custom piston rod and 2x volume valve can make this airgun even more powerful.

First, install a US valve. If you want to keep the 1377 under 500 fps, this can be done with a US valve. You may also need to modify the barrel and transfer port to increase the velocity. In this case, you’ll need to spend about 600 dollars on parts. But a little bit of work can make the 1377 much more effective. A US valve will also keep the rifle from going over 500 fps.


The Crosman 1377, also known as the American Classic, is a single-shot bolt-action pneumatic pellet gun that features a rifled steel barrel and imitation wood checkered plastic grips. Introduced in 1977, this airgun has been in continuous production ever since. There is also a version of the gun that converts to a long carbine. The Crosman 1377 is not a target airgun that is intended for competitive shooting, but it is a great choice for those who want a high-quality single-shot airgun that is affordable and reliable.

In addition to the standard factory settings, the 1377 can also be upgraded with power mods that make it more powerful. Some of the upgrades include steel breeches, enlarged transfer ports, larger calibers, longer barrels, and metal pump pistons and valves. You can also upgrade the grips and cosmetics for your firearm. Ultimately, your Crosman 1377 is the most customizable rifle on the market.


If you are looking for a new scope for your Crosman CO2 pistol, the NecStar optic mount can be a good choice. It is made of high-quality aluminum and packs a standard 1″ tube filled with nitrogen. It can withstand recoil shocks and fogging. Moreover, it can be used on both pistols and air rifles. Here’s what you need to know before buying this product.

This Crosman 1377 scope features a fully-coated optic glass for improved contrast and brightness. Its objective lens is 32mm, which makes it big enough to gather light in any condition. You can also get free 20mm scope mounts with this product, but it will not support dovetail rails. However, if you want a more detailed reticle, there are many options available in the market.


To make your Crosman air rifle more powerful, you can add various upgrades to it. Among them are an aftermarket breech, hammer debounce device, and poly port. The pellet velocity with the 1377 is around 600 feet per second, or 180 m/s. But many Crosman owners report that they’re able to shoot this air rifle with as few as three pumps. And if you’re looking for a smoother shoot, you can try the Flat Man’s kit, which includes a flat top valve/piston and a bore out bushing. Moreover, the rifle has a steel breech, Mountain Air bolt, and RJ Machine bolt handle.

Another accessory that makes your Crosman air rifle more powerful is a Crosman BB magazine. These are available in different capacities and styles. A BB magazine will hold up to 25 BBs, and the magazine will hold 17 rounds. The barrel is made of steel with a rifled design. You can also get a long carbine version of it by installing a separate barrel and a BB magazine.


One of the biggest questions we’ve been getting is why a Crosman 1377 isn’t as powerful as it used to be. While it’s an excellent shooting gun, you should be careful about the quality of the gaskets, which are made of rubber or synthetic materials. While they are not as powerful as those of competition-level target airguns, they are still a worthy investment.

If you’re not concerned with performance, the 1377’s stock barrel and trigger are plenty powerful. If you’re looking to increase your rifle’s velocity, you can do several modifications yourself. Aftermarket parts and shoulder stocks can make your airgun more effective. You can even add a rifle-length barrel and a flat-top piston to your airgun. And if you’re not a fan of the stock barrel and trigger, a refurbished 1377 will only cost you $50!


Forearm is one of the most critical components of an airgun. This is where the barrel and forearm meet, and the forearm is responsible for determining the overall power of the weapon. The crosman 1377 comes with a plastic forearm and fully ambidextrous grips. The 1377 has a bolt on the right side of the receiver, but you can upgrade to a steel breech for a higher level of power. The 1377 also comes with a steel breech for mounting scopes and sights. This option can be purchased separately or as part of a kit. The P1377 American Classic features reliable performance and a pistol built for plinking, tin cans, and hunting.

If you have a good forearm and are willing to put some elbow grease into your airgun, a single-shot pellet gun is a great choice. This airgun features a steel barrel with a rifle-length barrel and imitation wood checkered plastic grips. This airgun has been in production since 1977. You can also convert the pistol to a carbine with the Crosman model 1379.


You can replace the rear sight with a scope rail if you like. The rear sight on the Crosman 1377 is removable and can be replaced with either a Crosman Steel Breach Kit or a Crosman Intermount. Both are mounts that clamp onto the barrel. There are many aftermarket parts available for the 1377, which can make it the most expensive airgun on the planet.

Both sights are fully adjustable on the Crosman 1377. While there are no click detents to adjust windage, they can be adjusted manually. The front sight has an index scale to judge windage adjustments, and the rear sight is reversed to become a peep sight. You can also adjust the height of the rear sight by adjusting the blade and lining up the rear sight with the front.

The rear sight is adjustable for brightness and can be replaced with an optical sight if desired. This model is also fitted with a metal rear sight. Its sight line is long, making it easier to aim. Unlike many air pistols, this one has a metal trigger for easier pumping. The trigger, however, is made of metal, and the rear sight can be mounted with optics if you prefer.


The Crosman 1377 is a single shot, multiple-pump pneumatic with a hand-pumped piston under the barrel. Despite being a venerable gun, the Crosman 1377 has fallen out of favor with airgun shooters, whose focus has shifted to more advanced, multi-pump airguns. Its predecessors, the Daisy 880 Powerline, Crosman 760 Pumpmaster, and Benjamin rifles, were among the last to implement this technology.

The two models differ in some other ways, including accuracy. The Crosman 2240 comes with a larger stock than the 1377. The Crosman 1377, on the other hand, has an aperture sight, which is a great feature for aiming. Both models have a simple pump mechanism, although the Crosman 1377 requires a little more pumping to shoot. The trigger is made of metal, and it has a special valve relief.

The American Classic is another excellent choice for plinking. It works well with tin cans, spinner targets, and paper targets. The pump-lever configuration makes it very easy to use, and the pistol still feels comfortable. The 7.1 grain pellet is very accurate, and the 1377 will give shooters six lb-ft. of energy at the muzzle, but that’s only good enough for a few hundred yards. Perfect hits, however, will require you to be at least twice as far away as that.

About The Author

Alison Sowle is the typical tv guru. With a social media evangelist background, she knows how to get her message out there. However, she's also an introvert at heart and loves nothing more than writing for hours on end. She's a passionate creator who takes great joy in learning about new cultures - especially when it comes to beer!