Description
Umarex Glock G17 / G45 Gas Magazine – 20 Rounds of Licensed Perfection
When you are running a Glock – nothing beats the reliability of an official Umarex (VFC) magazine – Designed specifically for the Gen5 G17 and the crossover G45 – this 20-round black metal magazine is the gold standard for your sidearm – It features the iconic Glock branding and a revised baseplate that makes indexing your reloads smoother than ever before – If you want your RIF to cycle exactly as the engineers intended – this is the only mag you should be reaching for –
Key Features & Performance
- Full Metal Construction – A heavy-duty alloy body that provides excellent thermal conductivity for consistent gas expansion –
- Gen5 Baseplate Design – Flared and textured to match the Gen5 grip – allowing for faster stripping of “stuck” mags during high-stress drills –
- High-Flow Output Valve – Optimized for the VFC-system blowback housing to ensure a crisp – snappy recoil impulse every time –
- Follower Lock – The follower can be held down for easier loading of those 20 rounds without fighting the spring tension –
- Double-Stack Efficiency – Precision-engineered feed lips to prevent double-feeding or “stovepiping” even under rapid fire –
The Pro Take
The 2.6475.1 is widely considered the most reliable Glock magazine on the market – Unlike cheaper clones – the tolerances on the feed lips are incredibly tight – meaning you won’t suffer from mid-cap syndrome or BBs spilling into your slide – The gas efficiency on these is also top-tier – usually allowing you to clear two full loads of BBs on a single charge of Green Gas – If you are serious about your kit and want a magazine that won’t vent gas the moment the temperature drops – this is the investment to make –
UK Spec & Site Performance
In the UK – we deal with everything from sun-baked summer days to freezing winter mornings – This magazine handles “Standard Green Gas” perfectly for UK site limits – keeping your Glock comfortably around the 300-330 FPS mark – On a classic British woodland site – the thermal mass of the metal body helps resist “cool-down” – allowing you to transition from your primary to your sidearm without a drop in power – It is fully compliant with UKARA site regulations and fits perfectly into standard 9mm or “Fast-Mag” pouches found at any UK CQB arena –
Friendly FAQ
Will this fit the Gen3 or Gen4 Umarex Glocks?
Yes – while it is designed with the Gen5 / G45 styling – it is backwards compatible with all Umarex (VFC) Glock 17 models –
Can I use CO2 in this magazine?
No – this is a dedicated gas magazine – attempting to use CO2 will damage the seals and the internal valves –
Does it come with the Glock logo on the base?
Absolutely – as an officially licensed Umarex product – it features the authentic Glock markings on the baseplate and the side of the mag body –
How many BBs does it actually hold?
The capacity is 20 rounds – but we recommend loading 19 to reduce stress on the feed lips and ensure the first shot chambers perfectly –





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