11 Umarex Airgun Glock 17 Gen 3 Dual Ammo of 2026 To Prevent Feeding Jams

1

Umarex High-Grade CO2 Cartridges for Pellet Guns, BB Guns and

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  9.4
• Brand
  Umarex

Key specs2

Cartridge Size and Quantity

12 Gram (Pack of 12)

Power Source Application

Designed to fuel standard 12-gram CO2 air pistols and rifles across BB, pellet, and airsoft mechanisms.

Pros & cons32

Pros

• Supplies standard 12-gram power compatible across pellet guns, BB guns, and airsoft platforms
• Comes in a 12-pack bundle to keep spare power capsules on hand during shooting sessions
• High-grade formulation helps maintain consistent pressure in compatible CO2 airguns

Cons

• Pack contains 12 cartridges which can deplete quickly during prolonged rapid-fire drills
• Listing does not specify integrated lubricant or valve cleaning additives

2

Umarex .177 Caliber Pellet Air Gun Rotary Magazine (Pack of

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  9.0
• Brand
  Umarex

Key specs2

Magazine Feed Mechanism

8-Shot Aluminum Rotary Cylinder

Model Compatibility Range

• Walther CP88, CP99, and PPQ pellet pistols
• Beretta M 92 FS and Colt 1911 A1 models
• Smith and Wesson M and P 45 and HK P30

Pros & cons32

Pros

• Machined from aluminum for solid durability in rotary-fed pellet airguns
• Includes 3 separate 8-shot rotary magazines for pre-loading before target drills
• Supports .177 caliber pellets across multiple licensed Umarex air pistol models

Cons

• Not compatible with Glock airgun platforms or inline BB feeding mechanisms
• Limited to 8 rounds per rotary cylinder before requiring a manual reload

3

T4E Glock G17 Gen 5 .43 Caliber Paintball Marker Magazine,

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  9.0
• Brand
  T4E

Key specs2

Ammunition and Caliber

.43 Caliber Paint or Powder Balls

CO2 Piercing Mechanism

Accommodates a 12-gram CO2 cartridge with quick tool-free piercing via a light blow to the magazine base plate.

Pros & cons32

Pros

• Features a tool-free puncture system activated by a light strike at the magazine base
• Feeds both paintballs and powder balls in .43 caliber for versatile training
• Houses a standard 12-gram CO2 cartridge directly inside the drop-out magazine body

Cons

• Restricted to .43 caliber T4E Glock G17 Gen5 markers and cannot feed .177 pellets or BBs
• Capacity is limited to 8 rounds per magazine charge

4

Daisy Powerline 426 Air Pistol

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  8.8
• Brand
  Daisy

Key specs2

Muzzle Velocity and Action

Up to 430 FPS Semi-Automatic

Magazine Feed Design

Integrated internal 15-shot BB reservoir built directly into the frame for fast reloading without separate clips.

Pros & cons32

Pros

• Achieves up to 430 FPS muzzle velocity with steel BBs using 12g CO2 power
• Built-in 15-shot magazine enables semi-automatic repeating fire for rapid plinking
• Ergonomic molded grip features deep checkering and finger grooves for firm retention

Cons

• Fires steel BBs only and cannot chamber or fire .177 caliber lead pellets
• Internal magazine is built into the frame rather than using drop-out magazines

5

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

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  8.6
• Brand
  Umarex

Key specs2

Glock Replica Specifications

• Officially licensed Glock Gen4 markings and controls
• Full metal slide with realistic cycling blowback
• Fits standard duty holsters at 1 pound total weight

BB Velocity and Capacity

Up to 320 FPS with 18-Round Drop-Out Mag

Pros & cons32

Pros

• Officially licensed Glock markings with full metal slide and authentic blowback recoil
• Full-size drop-out metal magazine holds 18 steel BBs along with the 12-gram CO2 capsule
• Dimensions match standard duty profiles to fit most aftermarket Glock duty holsters

Cons

• Engineered strictly for steel BBs and will jam if loaded with .177 lead pellets
• Peak velocity tops out at 320 FPS which is lower than non-blowback BB pistols

6

Glock 19X Half Blowback 6mm BB Pistol Airsoft Gun Magazine,

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  8.6
• Brand
  Elite Force

Key specs2

Airsoft Magazine Caliber

6mm Airsoft BB (14-Round Capacity)

Platform Compatibility

Built specifically for Elite Force Glock 19X half-blowback airsoft platforms; verify power valve type prior to purchase.

Pros & cons33

Pros

• Houses 14 rounds of 6mm plastic BBs for dedicated Glock 19X airsoft training
• Designed specifically for half-blowback Glock 19X airsoft replica actions
• Drop-out form factor allows authentic magazine exchange drills

Cons

• Designed exclusively for 6mm airsoft BBs and cannot use .177 steel BBs or pellets
• Listing does not state whether CO2 or green gas powers the magazine
• Holds 14 rounds which is lower capacity than some full-size airsoft magazines

7

Gamo P-430 Pellet / BB CO2 Pistol .177 Cal.

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  8.2
• Brand
  Gamo

Key specs2

Ammunition Versatility

Fires both .177 lead pellets and steel BBs, letting you switch ammunition types without changing pistol frames.

Powerplant and Caliber

12g CO2 Powered .177 Caliber

Pros & cons32

Pros

• Dual-ammo capability fires both .177 caliber pellets and steel BBs from one pistol
• Powered by standard 12-gram CO2 cartridges for semi-automatic shooting sessions
• Compact semi-auto design suits target plinking with whichever ammo is on hand

Cons

• Manufacturer details do not disclose whether the barrel is rifled or smoothbore
• Listing lacks specific velocity ratings and magazine capacity specifications

8

Umarex SA10 .177 Caliber Pellet or BB Gun Air Pistol,

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  7.8
• Brand
  Umarex

Key specs2

Dual-Ammo Feeding System

Drop-out magazine houses the 12g CO2 cartridge and holds an 8-shot rotary clip capable of firing either .177 pellets or steel BBs.

Included Accessories

• Drop-out CO2 magazine housing
• Three 8-shot rotary clips (24 rounds total)
• Under-barrel accessory mounting rail

Pros & cons42

Pros

• True dual-ammo functionality safely cycles both .177 steel BBs and .177 lead pellets
• Includes a drop-out CO2 magazine bundled with three 8-shot rotary clips
• Realistic blowback slide pairs with an integrated accessory rail for lights and lasers
• Distinct styling provides 24 total pre-loadable shots across the three rotary clips

Cons

• Non-Glock styling does not fit Glock-specific holsters or mimic Glock ergonomics
• Rotary clips must be seated cleanly inside the main magazine to avoid cycling catches

9

Elite Force Umarex 2276320 Airsoft Accessories Magazines

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  7.6
• Brand
  Elite Force

Key specs2

Part Number and Category

Model 2276320 Airsoft Magazine

Compatibility Verification

Verify your specific Elite Force airsoft pistol model against part number 2276320 before purchasing.

Pros & cons32

Pros

• Official Elite Force replacement magazine with factory part number 2276320
• Designed for compatible airsoft replica models from the Umarex and Elite Force lineup
• Constructed to factory dimensions to ensure proper mag-well latching

Cons

• Built for 6mm airsoft replicas and completely incompatible with .177 airguns
• Listing does not detail round capacity or specific model compatibility on the page

10

Sig Sauer Airgun, P229 RX, .177cal, CO2, Black (AIR-P229RX-177-BLK)

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  7.4
• Brand
  Sig Sauer

Key specs3

Barrel and Velocity Specs

Rifled Steel Barrel, Up to 380 FPS

Rotary Disc Feeding System

Drop-free dual-ammo magazine holds twin 8-shot rotary discs for 16 continuous rounds of BBs or pellets.

Rapid CO2 Loading Mechanism

Patented cam lever loading system concealed in the E2 grip enables rapid tool-free 12g CO2 swaps.

Pros & cons42

Pros

• Rifled steel barrel allows true dual-ammo shooting of both .177 pellets and steel BBs
• Reversible drop-free magazine utilizes twin 8-shot rotary discs for 16 total rounds
• Tool-free cam lever system inside the E2 grip enables one-handed CO2 capsule changes
• Optics-ready metal slide with blowback action reaches velocities up to 380 FPS

Cons

• Recreates the Sig P229 platform rather than Glock 17 frame geometry and handling
• Weighs 2.2 pounds which requires firm two-handed support during long target strings

11

Umarex GLOCK 17 Gen 5 21-Round Magazine for Blowback .177

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  6.6
• Brand
  Umarex

Key specs2

Glock Generation Match

Glock 17 Gen 5 Pellet Air Pistol Only

Pellet Belt Capacity

Features a 21-round feeding belt optimized strictly for .177 lead pellets in blowback Gen 5 Glock frames.

Pros & cons32

Pros

• High-capacity 21-round belt-fed design tailored for .177 caliber pellet shooting
• Engineered specifically for the Umarex Glock 17 Gen 5 blowback pellet air pistol
• Full-size drop-out magazine geometry replicates authentic Glock reload ergonomics

Cons

• Engineered strictly for .177 pellets and will malfunction if loaded with steel BBs
• Not backwards compatible with older Glock Gen 3 or Gen 4 BB-only airgun models

Last update on 2026-10-08 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Does Umarex make a Glock 17 that shoots both pellets and BBs?

No, Umarex Glock 17 air pistols are engineered for specific projectile types rather than universal dual-ammo feeding. The GLOCK 17 Gen4 replica is built as an 18-shot .177 caliber steel BB air pistol with blowback, whereas the GLOCK 17 Gen 5 pellet version uses a proprietary 21-round pellet magazine. Loading pellets into an inline BB track or loading steel BBs into a pellet belt causes instant feeding jams and cycling failures. If you want a dual-ammo platform that handles both .177 caliber pellets and steel BBs from the factory, models like the Umarex SA10 provide that multi-ammo capability while retaining realistic slide blowback.

Can you safely shoot steel BBs through a rifled pellet barrel?

It depends on whether the manufacturer explicitly rates that specific rifled barrel for dual-ammo use. For example, the Sig Sauer P229 RX features a rifled steel barrel designed to shoot both .177 caliber steel BBs and lead pellets. But firing hard steel BBs through a standard airgun barrel built strictly for lead pellets can degrade the rifling grooves or lodge projectiles in the breech. Smoothbore barrels, by contrast, lack the internal rifling needed to stabilize shaped pellets. Always verify the barrel specifications in the manual before switching between steel and lead ammunition.

Which replacement magazine fits my specific Glock airgun generation?

Replacement magazines are engineered strictly for an individual generation and caliber. An 18-shot .177 BB magazine fits the GLOCK 17 Gen4 BB pistol, while the GLOCK 17 Gen 5 blowback pellet pistol requires its specific 21-round pellet magazine. Also, training markers like the T4E Glock G17 Gen 5 use an 8-round magazine (part number 2292169) built exclusively for .43 caliber paint or powder balls. When setting up a CO2 BB gun or pellet replica, check your slide markings and confirm the exact factory part number before buying spare magazines.

Will Umarex 8-shot rotary pellet clips work in a Glock 17 air pistol?

No, standard Umarex 8-shot rotary magazines are not compatible with Glock replica pistols. These silver rotary clips are designed specifically for select .177 caliber pellet pistols such as the Walther CP88, CP88 Competition, CP99, PPQ, Beretta M 92 FS, Colt Government Model 1911 A1, HK P30, and the Lever Action Rifle. Glock pellet models use dedicated internal feeding setups, such as the 21-round magazine on the Gen 5 pellet pistol. Forcing a rotary clip into a Glock slide will damage the internal feeding assembly.

What causes CO2 cartridges to leak or dump gas during rapid target shooting?

Rapid shooting cools the valve assembly quickly, which causes internal seals to shrink and vent gas. Standard 12-gram CO2 cartridges drop in temperature as liquid CO2 expands during fast strings of fire. If a cartridge is seated crookedly or overtightened during installation, the puncture seal can distort and leak gas around the piercing pin. Some modern magazines, like the T4E Glock G17 Gen 5 magazine, let you swap a 12-gram CO2 cartridge without tools in seconds, but taking a brief pause between rapid magazine dumps helps keep your seals warm and airtight.

How do you prevent feeding jams in dual-ammo and replica air pistols?

Preventing feeding jams requires matching your projectile shape directly to the magazine mechanism. Dedicated dual-ammo pistols like the Umarex SA10 accommodate both .177 caliber pellets and steel BBs, but pellets must be seated flush so protruding skirts do not catch on the breech during cycling. For dedicated smoothbore BB pistols, never force lead pellets into the magazine channel, as the soft lead easily deforms under spring tension. Checking projectile fit and keeping your CO2 pressure steady ensures consistent cycling on every shot.