8 Umarex Glock 17 Bb Gun of 2026 For Realistic Training

1

Umarex GLOCK 17 Blowback .177 Caliber BB Gun Air Pistol,

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• ARS Mark

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  8.6
• Brand
  Umarex

Key specs2

Slide And Sighting

Features fixed Glock-style sights on an authentic full-metal slide that fits standard duty holsters but lacks optics mounting.

Muzzle Velocity

Up to 365 FPS

Pros & cons42

Pros

• Full metal slide delivers authentic blowback cycling on an authentic Gen3 frame
• Reaches muzzle velocities up to 365 FPS using .177 caliber steel BBs
• 18-shot drop-out metal magazine replicates firearm reload operations
• Dimensioned to fit most aftermarket duty holsters for draw practice

Cons

• Fixed factory sights lack mounting plates for red dot reflex optics
• 12-gram CO2 cartridges and steel BBs must be purchased separately

2

GLOCK 17 Blowback .177 Caliber BB Gun Air Pistol, Gen4

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  8.6
• Brand
  Umarex

Key specs2

Holster Compatibility

Dimensions and full metal slide allow it to fit most aftermarket duty holsters for realistic firearm manipulation practice.

Gen4 Velocity Rating

Up to 320 FPS

Pros & cons42

Pros

• Authentic Gen4 frame geometry, controls, and officially licensed markings
• Realistic blowback slide fits most standard duty holsters for draw drills
• Drop-out metal magazine holds 18 steel BBs alongside the CO2 power source
• Lightweight 1-pound configuration matches standard handgun balance

Cons

• Muzzle velocity tops out at 320 FPS which is slower than Gen3 models
• Fixed iron sights do not support mounting micro red dot optics

3

Glock 17 Gen 5 MOS Blowback .177 Caliber BB Gun

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  8.6
• Brand
  Umarex

Key specs2

Optics Readiness

Factory MOS slide cut accepts pistol reflex sights, making it suitable for modern red dot transition training.

Magazine Spec

18 rounds (.177 BB, part 2255220)

Pros & cons42

Pros

• MOS slide cut allows mounting micro red dot reflex sights for modern drills
• Shoots .177 steel BBs at velocities up to 360 FPS with crisp blowback
• Modern Gen 5 frame ergonomics paired with an 18-round drop-free magazine
• Lightweight 1-pound polymer frame handles comfortably during long drills

Cons

• Reflex optic and mounting adapter plates must be acquired separately
• 12-gram CO2 cartridges are not supplied with the pistol

4

Umarex USA GLOCK 19 Gen3 6mm BB Pistol Airsoft Gun,

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  8.6
• Brand
  Elite Force

Key specs2

Ammunition And Caliber

6mm Plastic Airsoft BBs

Frame Size Difference

Replicates the compact Glock 19 frame with shorter grip and slide dimensions rather than the full-size Glock 17.

Pros & cons32

Pros

• Authentic compact Glock 19 ergonomics with functional metal slide blowback
• Fires 6mm plastic BBs up to 350 FPS for safer force-on-force training
• Replicates authentic field stripping procedures and drop-free mag release

Cons

• Uses 6mm plastic airsoft BBs rather than .177 caliber steel ammunition
• Shorter compact grip and slide do not replicate full-size Glock 17 dimensions

5

Elite Force Glock 17 Gen5 GBB Blowback 6mm BB Pistol

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  8.6
• Brand
  Elite Force

Key specs2

Caliber Distinction

Built for 6mm airsoft BBs instead of .177 steel projectiles, making it suited for skirmishes rather than steel plinking.

Gas System Check

Verify Green Gas vs CO2

Pros & cons32

Pros

• Authentic Glock 17 Gen5 frame styling with realistic gas blowback recoil
• Full-size frame dimensions provide exact 1-to-1 live pistol handling
• Ideal for force-on-force tactical scenarios requiring 6mm plastic BBs

Cons

• Incompatible with .177 steel BBs typically preferred for backyard plinking
• Product listing does not specify green gas or CO2 magazine compatibility

6

Glock 19 Gen 5 MOS .177 Caliber BB Gun Pistol

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  8.4
• Brand
  Umarex

Key specs2

Optic Plate Adapter Set

Includes 4 Factory MOS Plates

Accessory Railing

Integrated lower accessory rail allows attachment of standard tactical weapon lights or laser aiming modules.

Pros & cons42

Pros

• Factory package includes 4 MOS optic adapter plates for micro reflex sights
• Integrated frame accessory rail mounts tactical flashlights and lasers
• Drop-free magazine holds 17 steel BBs and an internal 12g CO2 cartridge
• Fires .177 caliber steel BBs at velocities up to 330 FPS

Cons

• Compact Glock 19 dimensions offer a shorter grip than the full-size Glock 17
• Reflex optic sight and CO2 power capsules must be purchased separately

7

Glock 17 Gen 5 MOS Blowback .177 Caliber BB Gun

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  8.0
• Brand
  Umarex

Key specs2

Optics Slide Configuration

Features the Gen 5 Modular Optic System slide cut for mounting handgun reflex sights onto a full-size frame.

Package Verification

Verify Included Plate Adapters

Pros & cons32

Pros

• Full-size Glock 17 Gen 5 platform featuring responsive blowback action
• MOS slide profile accepts micro reflex red dot sights for pistol training
• Feeds standard .177 caliber steel BBs for target and plinking sessions

Cons

• Product listing leaves factory velocity rating and plate count unspecified
• Requires separate purchase of reflex sights and 12-gram CO2 capsules

8

Glock 17 Gen5 MOS .177 BB Pistol with RDS 8

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  4.0
• Brand
  Umarex

Key specs2

Included Sighting System

Bundled Umarex RDS 8 Red Dot

Velocity And Power

Delivers muzzle speeds up to 370 FPS using .177 steel BBs driven by a single 12-gram CO2 cartridge.

Pros & cons42

Pros

• Factory bundle includes the Umarex RDS 8 red dot reflex sight
• Reaches top velocities up to 370 FPS with realistic CO2 blowback action
• Full-size 18-round drop-free magazine supports realistic reload manipulation
• Integrated lower frame rail accepts weapon lights and aiming lasers

Cons

• Included RDS 8 optic requires initial user assembly and mounting
• Total 2-pound weight makes it slightly heavier than bare polymer pistols

Last update on 2026-10-10 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

What is the difference between Umarex Glock 17 Gen3, Gen4, and Gen5 MOS models?

The primary differences center on optic compatibility and frame styling. The Glock 17 Gen3 and Gen4 blowback pistols feature fixed sights and classic frame textures, functioning as 18-shot, .177 caliber air pistols powered by a 12-gram CO2 cartridge. The Glock 17 Gen 5 MOS iteration incorporates the Modular Optic System slide, which is optics-ready to accept pistol reflex sights or comes bundled with an Umarex RDS 8 red dot sight. If you are comparing CO2 BB gun options for training, confirming the generation ensures you get the exact slide setup you require.

Can you mount a red dot sight directly to an Umarex Glock 17 slide?

Yes, but only if you select a Glock 17 Gen 5 MOS model. Standard Gen3 and Gen4 blowback models feature solid slides without factory optic mounting cuts. The Glock 17 Gen 5 MOS platform includes an optic-ready slide cut engineered to mount micro reflex sights, and specific configurations include the Umarex RDS 8 red dot optic with the necessary mounting hardware in the box.

Are Umarex Glock 17 BB gun magazines interchangeable between generations?

You should verify generation compatibility before ordering because the manufacturer lists distinct replacement magazines for each setup. Retail listings specify distinct units such as the Glock 17 Gen 5 MOS Magazine, the Gen4 Spare Magazine, and the Gen3 Spare Magazine. While these models share an 18-shot drop-free design holding a 12-gram CO2 cartridge, matching the replacement magazine to your specific Gen3, Gen4, or Gen5 frame prevents feeding and locking issues.

Does the Umarex Glock 17 shoot .177 steel BBs or 6mm airsoft rounds?

It depends on the exact model listing you select, as Umarex manufactures Glock replicas in both calibers. The Glock 17 Gen3, Gen4, and Gen5 MOS BB air pistols are engineered strictly for .177 caliber steel BBs. Conversely, listings such as the Elite Force Glock 17 Gen5 GBB or the Umarex Glock 19 Gen3 are designed for 6mm airsoft BBs. Always verify the caliber specification before ordering to ensure you receive the right ammunition format for your training.

What velocity does the Umarex Glock 17 Gen5 MOS BB pistol deliver?

The Glock 17 Gen5 MOS .177 BB pistol equipped with the RDS 8 optic lists a muzzle velocity rating of 370 FPS. It uses an 18-round drop-free magazine that houses a standard 12-gram CO2 cartridge to cycle the blowback slide. While long-range practice gear like a tactical air rifle produces higher velocities for distant targets, 370 FPS delivers snappy cycling and authentic handling for handgun holster work.

How do you avoid accidentally ordering a magazine instead of the full Glock 17 air pistol?

Always check the product title and details for phrases like "(Mag Only)" or "Spare Magazine." Drop-free CO2 magazines for the Gen3, Gen4, and Gen 5 MOS models are sold separately and often share similar photos with complete airguns. Confirm the listed weight before buying, as a complete blowback pistol lists between 1 and 2 pounds, whereas a standalone magazine listing contains only the ammunition feeding unit.