Crosman 30131 TR77 NPS Review


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If you are on the mission to rescue your wife’s garden from pesky varmints, add Crosman TR 77 to your short list.

This is an accurate and powerful gun that give you familiar feel of an AR15 tactical rifle.

Gun Type

Crosman 30131 TR77 NPS is powered by nitro piston technology. A nitro piston gun (or gas piston gun) works the same as the spring gun but it has a gas-filled cylinder instead of a coilded spring. The air in the cylinder is already compressed and you apply more pressure to it when you cock the gun. The pressurized air is kept under tension until you pull the trigger. When you fire, the pellet is propelled downrange in the barrel due to the driving force from compressed air. Nitro piston rifle is lighter, last longer, less recoil and easier to cock in comparison with spring gun. Further more, it can be left cocked for days without spring fatigue. Nitro piston technology is one of the few innovation on the air gun world that makes your gun sport more breath-taking.

The caliber (the internal diameter of the bore, measured in diameters) is .177 (4.5 millimeter). .177 caliber is the most common caliber for target shooting, plinking and small game hunting. This gun is single-shot, break barrel gun so it meant that you have only 1 shot at a time. After the first shot, you have to break the barrel to prepare for the second shot. Single-shot pellet makes you discipline shooter: you know you have to make your first shot count since you have only one chance to hit the target before reloading.

Crosman 30131 TR77 NPS gun type

The barrel is rifled with spiral grooves inside the bore to make bullet spin. Spin stabilizes pellet, improves accuracy and enhances shooting range. Besides, the barrel is cut shorter than a typical barrel (that’s why the name of this gun is NPS with the letter “S” standing for “Short” and NP representing for “Nitro Piston”) for 2 reasons: First, it gives the gun authentic tactical look. Second , with a short barrel rifle, you are good to go in the tight quarter or when maneuverability is of greatest importance. Moreover, there is a muzzle brake at the end of the bore that redirects the gas to counter recoil. A quick not about recoil: Your rifle kicks back because the gas propels the pellet in one direction also moves the barrel in the opposite direction so if you want to reduce felt recoil, you have to change the way the released gas goes. The muzzle brake takes the form of 2 inches tubes screwed onto the muzzle and diverts gas 90 degrees around the barrel.This is accomplished by the series of small parallel holes drilled in the tube. The advantages? Muzzle brake cut recoil up to 50 percent which is no-brainer for most shooter.

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Crosman 30131 TR77 NPS stock

The stock is all-weather synthetic stock. Unlike woodstock which is heavy and easily affected by the moisture and temperature, synthetic stock is lighter and functions perfectly in any type of weather so it’s great choice for young shooters with medium-build and for air gunners who want to own a maintenance-free air gun.

The stock has rubber buttplate to reduce recoil. Besides, the recoil pad is removable to reveal the convenient storage space .You can store plenty of things in there like : pellet, paper target, lens cleaning cloth, etc, hence, it comes in handy when you take the gun out to the wood.

What’s special about this stock is its pistol grip : it orients the hand in a forward, vertical orientation, similar to the position one would take with a conventional pistol. Pistol grip gives you plenty of advantage: first, you don’t need to raise your elbow as in traditional shooting stance which is used with stock. Therefore, it’s easy for you to maneuver in a house, stairs, around corners, etc with an air rifle with a pistol grip installed (especially in close quarter), and itsis effortless to move, crouch, run, and hold it with one hand as well. Second, it is much more intuitive to find the safety button. Third, it is more convenient to hold your air rifle with your hand on a grip for a long time if you have a pistol grip. Your hands will not get tired as fast as with traditional grip. Also, it reduces strain on your wrist. Finally, pistol grip allows you to have your hand close to the body and reduces your silhouette which is crucial in a hunting scenario. In summary, a gun with pistol grip gives you unfair advantage in the hunting field.


The Crosman TR 77 NPS uses .177 pellet as its only source of ammunition. .177 pellet is cheaper than other types of pellets. If you look at the pellet count box, you will see that you’ll get exactly twice as many .177 as .22 for the same price. Thus, .177 is your best choice for long hours of fun plinking and exciting target shooting.

Cocking and loading

Crosman 30131 TR77 NPS sight

Cocking the gun: First, put the gun ON SAFE, hold the gun by your side, the firmly tap the muzzle end to expose the breech. Let the gun rest on your upper thigh and grasp the muzzle end. Contrinue to pull the barrel down to its limitation to perform cocking action.

Loading the pellet: with the breech is opened after cocking, put the pellet (with the pellet’s nose lying forward) into the breech. Then pull the barrel up to its original position until it locks and you are ready to fire.

Velocity, accuracy and power

Chrony tests give us the result as follows: this gun delivers 1025 FPS with Crosman premiere Hollow point pellet and 1120 FPS with RWS basic lead pellet. That’s pretty close to the advertised number and supersonic seeker will be very pleased with this remarkable velocity

For this nitro piston gun, different shooting tests have been conducted by various shooters with positive results. The common shooting groups are: 1/2″ at 10 yards to 30 yards and dime size at 30-40 yards. As you can see, this gun is extremely accurate with effective shooting rang up to 40 yards. Moreover, with supersonic velocity, this rifle hit the target with serious authority so it can kill crow, turkey, possum, fox, ground hog, rabbit with ease. The incredible velocity power and magnum power combined makes this gun a perfect choice for small game hunter and pest exterminator.


Crosman 30131 TR77 NPS scope

This gun doesn’t come with traditional open sight: no front sight and no rear sight. Instead of iron sight , Crosman installs a 4×32 Centerpoint scope help you get more precision in shooting. 32 is the diameter of the front lens, measured in millimeters. 4 is the magnification ability of the scope: it mean that this scope magnifies picture 4 times bigger than the image you see without it.

crossman 30131 Sight

The Crosman TR 77 NPS produce velocity up to 1200 FPS (feet per second). This is supersonic velocity that has surpassed the speed of sound (about 1100 FPS, vary with altitude and temperature), so you might hear the loud crack if you use lightweight pellet due to the pellet breaks the sound barrier.


  • Caliber: 0.177”
  • Velocity: 1200 FPS with alloy/1000 FPS with lead
  • Loudness: 3- Medium
  • Barrel Lenth: 12.0”
  • Overall Length: 40.0”
  • Shot Capacity: 1
  • Barrel: rifled
  • Front Sight: None
  • Rear Sight: None
  • Scopeable: 11mm dovetail
  • Buttplate: Rubber
  • Suggested for: Plinking/Target shooting/Pest control/ Small game hunting
  • Action: Break barrel
  • Safety: Manual
  • Powerplant: Nitro-piston
  • Function: Single-shot
  • Body Type: Rifle
  • Weight: 5.8 lbs

This video below highlights the main features of TR77 NPS:

Customer review

There are some reviews here and there about his gun. Positive reviews show that people love this rifle due to its hair-splitting accuracy, remarkable power and professional design. They are also satisfied with it because it helps them clear out unwanted critters in their garden. On the other hand, the negative reviews say it’s too loud. This issue can be remedied in 2 ways: First is the gun will quiet down after breaking-in, or you could use heavy pellet that doesn’t break the sound barrier

  • Supersonic velocity
  • Decent stock
  • Magnum power
  • Fantastic accuracy
  • Good scope
  • Ergonomic pistol grip
  • Uniqe short barrel
  • Loud if you use alloy pellet


The price for Crosman 30131 is only about $120. This is good price for a supersonic gun that has special tactical design and delivers jaw-dropping power.

There are a couple of different listings online with different prices but the listing I found with the lowest price is the cheapest price among online e-commercial sites like Amazon, PyramydAir, Walmart,etc.

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Crosman TR77 NPS is a valuable gun that will get the job done for pest haters and frequent shooters. If you want a nitro piston rifle with dead-on accuracy and superb power to take down pesky critters in your property, get this gun and a freezer at the same time because you will need a big storage for upcoming animal dishes.


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