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Borner P1 GNB 4.5mm – Maximum efficiency and up to 115 shots per cartridge
Looking for an air pistol that lets you shoot longer and more economically without constant interruptions to replace the propellant? The Borner P1 GNB (Gas Non-Blowback) in 4.5mm caliber delivers a stable and reliable muzzle velocity of 120 m/s. Since this model is designed without gas-consuming blowback recoil, it saves massive amounts of propellant and gives you an exceptionally high number of shots from each cartridge.
Tip from the store: The Borner P1 GNB is the obvious choice if you prioritize accuracy and long life per CO2 cartridge over heavy recoil. While a blowback pistol uses a lot of gas to drive the slide backward, this GNB version channels all the energy directly behind the pellet.It gives you up to an incredible 115 shots per cartridge, outperforming standard blowback models by a mile in running costs!
Predictable accuracy, reliable mechanics, and high durability
Borner P1 GNB is built for maximum reliability and easy everyday handling. Weighing 687 grams, it sits well-balanced in the hand, and the lack of moving external parts during firing makes it considerably easier to keep your sight picture completely steady shot after shot. This makes it more accurate than cheaper and lighter spring-powered models in the same price range. The air pistol features vital mechanical parts and a metal barrel, combined with a robust polymer frame. It comes equipped with an easily accessible manual safety and a comfortable grip for optimal control while shooting.
Don’t forget the essential accessories!
To ensure you get the best possible experience with your Borner P1, we recommend the following:
- Pellets/Ammunition: This pistol exclusively uses 4.5mm steel BBs. We recommend buying bulk packs to ensure the best possible price per shot during practice sessions.
- Propellant: Standard 12g CO2 cartridges. Make sure to keep a box on hand so you never run out in the middle of a shooting session.
- Maintenance: To care for the valves, apply a drop of silicone oil (Pellgun oil) to the tip of the CO2 cartridge periodically before screwing it in. This prevents the seals from drying out and ensures a 100% airtight system.
- Safety: Steel BBs can ricochet off hard surfaces. Always wear approved safety glasses and use a sturdy BB trap rated for steel BBs.
Norwegian rules for registration-free air guns (4.5mm)
Under Norwegian firearms regulations and the updates to the digital firearms register from 2026, air guns in 4.5mm (.177) caliber are completely exempt from registration in Norway. No police permit or firearms application is required to purchase this product. However, there is an absolute minimum age requirement of 18 to purchase it, and valid ID must be verified in our online store before shipping.
Technical data
| Model | Borner P1 GNB (SKU: 8.4450) |
| Caliber | 4.5mm (.177 cal) |
| System | CO2 (12g cartridge) |
| Muzzle velocity | 120 m/s |
| Mechanism | Semi-automatic (Gas Non-Blowback) |
| Magazine capacity | 16–18 steel BBs |
| Weight | 687 grams |
| Energy | < 3.0 Joules |
The customer purchases the goods at their own risk and is responsible for complying with all local legal requirements regarding the purchase, possession, use, or transport of the goods available in the online store.
This includes, but is not limited to, ASG (softguns), air rifles, and paintball replicas, which may be subject to specific regulations concerning weapons and ammunition.
Restrictions on the purchase, possession, use, or transport of these goods may apply in the destination country, and the seller assumes no responsibility for this. Any fees or costs (including administrative fees, validation, taxes, and customs duties) are the customer's responsibility.
The use of ASG (softguns), air rifles, and paintball replicas requires appropriate safety measures and caution. These products are not intended for persons under 18 years of age.