Replica Air Guns

Umarex TAC XBG CO2 NBB Steel BB gun

(2 reviews)4.5
In Stock
$ 100.96

Total: $100.96

Type: BB air pistol
Manufacturer: Umarex
Model: XBG - TDP 4
Materials: Plastic outer shell
Weight: XBG .9 pounds (400 grams) - TDP 45 .8 pounds (390 grams)
Barrel: Metal non-rifled (4.25 inches)
Propulsion: CO2 x 1
Action: Semi-auto non-blowback, double action only
Ammunition Type: 4.5mm BB's
Ammunition Capacity: 19-round metal stick magazine
FPS: 410

Buy the Magazine: UMX2253517

Trigger Pull: The trigger pull on the Umarex XBG and TDP 45 is moderately heavy, which is typical for a double-action-only trigger. The pull requires a substantial amount of initial effort, weighing in at around 8-9 pounds, and the release occurs at the very end of this pull, accompanied by a small clicking noise just before release. Those accustomed to other budget-friendly double-action triggers, where the barrel extends from the front upon pulling the trigger, will find these guns’ trigger mechanisms very familiar as they are similarly configured.

Accuracy: The accuracy of these guns is still to be evaluated, as I haven't yet conducted the Field Test or Shooting tests. I'll add a link here to my official Field Shooting Test once it's complete. Currently, based on feedback from others, it seems that these Umarex CO2 BB Pistols deliver satisfactory performance in terms of shots per CO2, accuracy, and FPS.

Build Quality: The Umarex XBG and TDP 45 share numerous internal components, and I believe they utilize many of the same parts internally. Although their plastic exteriors differ significantly, most mechanical components are integrated into these shells, with the exception of the trigger, safety, and magazine release. The primary construction material is plastic, except for some internal elements, the magazines, barrels, and triggers.

Realism: The Umarex XBG and TDP 45 CO2 BB Pistols aren't direct replicas of any specific existing firearm. Styled after contemporary mid-sized semi-automatic pistols, it's challenging to associate them with any specific model. While they have the appearance of real guns, their design is more focused on the ease of BB gun construction rather than replicating the exact function of a real firearm. However, their efficient and straightforward operation suggests they will be highly reliable.


  • Affordable price, around $40.
  • Balanced performance in shots per CO2 and FPS (accuracy pending).
  • Compatible universal metal stick magazine.
  • Well-concealed CO2 tabs.
  • Accessory rails included.
  • Subtle construction screws.
  • Proven, reliable design.
  • The SA177-style CO2 hatch is a favorable feature.


  • Mostly plastic construction.
  • Limited functioning parts, with most being part of the plastic mold.
  • The double-action trigger is somewhat lengthy and heavy.
  • Fixed sights require accuracy to be inherent in the gun's alignment.


While my preference is for air pistols with more metallic components and functional features, not everyone is looking to spend over $100 on an airgun or needs high realism. Many are seeking an affordable, performance-oriented, and reliable gun. A simpler design often translates to enhanced reliability due to fewer moving parts. Depending on your needs, even if you own more realistic high-end airguns, the budget-friendly Umarex XBG or TDP 45 models could be ideal for everyday use, reducing wear on more expensive collector items.

Barrel Size:4.25 Inch
Caliber:4.5 mm (.177 cal)
FPS:400 to 450
Ammo Type:Steel BB
Power Source:Co2
Trigger Action:Double
Blowback Action:Non-Blowback
Rear Sight:Adjustable
Front Sight:Blade
Primary Material:Metal & Polymer
Barrel Length:10.8 cm (4.25 inch)

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Mar 08, 2017
Certified buyer

Excellent value carbine !

its the xbg with fore grip, shoulder stock, and rails all around for dot sight/flash light/laser. xbg is a great pistol that shoot hard, all the accessory included make this a very nice package. Highly recommended.
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May 12, 2016

So Far its great

great accuracy until C02 is weak just like other BB guns
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