The Green Gas Magazine for GLOCK 17 Gen.3 and Gen.4 (23 bb) produced by VFC for UMAREX is the original replacement with official license par excellence. Constructed with a solid metal body (250 grams) to balance the weight of the replica, it offers a nominal capacity of 23 BBs. The most beloved feature by realism purists is the hidden gas valve: covered by the polymer base with original logos, it makes the magazine aesthetically identical to the firearm counterpart. Natively compatible with Glock 19 as well!
This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.
| International | XS | S | M | L | XL | XXL | XXXL |
|---|---|---|---|---|---|---|---|
| Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 |
| US | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
| Chest Circumference (inches) | 33-35" | 36-38" | 39-41" | 42-44" | 45-47" | 48-50" | 51-53" |
| Chest Circumference (cm) | 84-89 | 91-97 | 98-104 | 107-112 | 114-119 | 122-127 | 129-134 |
| Waist Circumference (inches) | 28" | 30" | 32" | 34" | 36" | 38" | 40" |
| Waist circumference (cm) | 71 | 76 | 81 | 86 | 91.5 | 96.5 | 101.5 |
LOWA FOOTWEAR SIZE CHART
SIZE SELECTION:
THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)
conversion chart: UK size - (IT size) - size in mm
Size 6.5 (40) 257mm
Size 7 (40 3/4) 262mm
Size 7.5 (41.5) 266mm
Size 8 (42) 270mm
Size 8.5 (42.5) 274mm
Size 9 (43 1/4) 278mm
Size 9.5 (44) 283mm
Size 10 (44.5) 287mm
Size 10.5 (45) 291mm
Size 11 (46) 295mm
Size 11.5 (46.5) 300mm
Size 12 (47) 304mm
Size 12.5 (48) 308mm
Size 13 (48.5) 312mm
NEED ADVICE ON CHOOSING A SIZE?
Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!
e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!
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VFC Reliability and Milsim Realism:
The Glock 17 in its 3rd and 4th generations is the most widespread platform in airsoft. VFC has created this one-piece metal alloy magazine to withstand the most intense game rhythms, optimizing the expansion chamber to guarantee a consistently crisp and constant "Blowback". But the real magic is aesthetic: unlike many other magazines, the Green Gas refill valve is not visible. It is concealed under the sliding polymer base, giving the weapon a 100% realistic look when inserted in the holster.
Extended Compatibility and Official License:
Produced under strict Umarex license, it sports all the original Glock logos. Based on the "Full Size" standard of the Austrian company, it fits perfectly not only on the Glock 17 (Gen.3 and Gen.4) and on the Glock 18C automatic pistol, but it is also a formidable upgrade for those who own the compact Glock 19: by hooking perfectly, it will provide you with extra shots protruding slightly from the bottom of the grip with a beautiful tactical effect.
How do you refill the gas? Don't panic if you don't see the valve! Look under the base: there is a small retention button. Press it lightly and slide the polymer base forward. Here is the revealed loading valve! Once the Green Gas is inserted, slide the base back until it "clicks". Pure realism and protection against dirt!
The 21 BB compromise: Officially (and physically) the magazine holds 23 BBs, but the product title says 20bb. Why? Because professional players know that filling the magazine "to the brim" puts enormous stress on the spring and the upper lips. Our golden advice is to load 20 or 21: you will insert the magazine smoothly, the first shot will pick up instantly and the component will last for years without breaking.
Compatibility with the G19: Do you have a compact Glock 19 and want more autonomy? This magazine is fine! Being longer, it will hook without problems and the gun will fire perfectly. It will protrude from the frame by a couple of centimeters, giving you a "special forces" look and more gas available.
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