Description
STI Combat Master Airsoft Pistol Magazine 20 Rounds 4.5mm CO2 – Black
Want to keep your STI Combat Master running hot without the hassle of constant reloads? This 20-round CO2 magazine is built specifically for the 4.5mm (.177) STI Combat Master air pistol, giving you smooth feeding, consistent performance, and that snappy blowback action that makes training sessions or plinking so addictive. Whether you're drilling reloads or just want longer trigger time, this mag delivers the reliability and durability you need.
Powered by a standard 12g CO2 cartridge (sold separately), the mag fits flush and feeds 4.5mm steel BBs with minimal fuss. The sleek black finish complements the Combat Master’s tactical aesthetic, and its rugged construction means it's ready for repeated use—whether at home, on the range, or in the middle of a high-tempo training session. Built by ASG, it's a precision fit with zero compatibility guesswork, giving you confidence that every reload will be fast and flawless.
Highlights
- 20-round capacity for extended firing sessions
- Designed for the 4.5mm STI Combat Master air pistol
- Powered by 12g CO2 cartridges
- Sleek matte black finish for a tactical look
- Durable build from trusted brand ASG
- Ideal for reload drills and realistic training
- Consistent velocity and smooth feeding
- Precision fit—no wobbles or misalignment
What's Included
- 1 x STI Combat Master 4.5mm CO2 Magazine
- Retail packaging (box of 48 available for wholesale)
- Manufacturer warranty information
Technical Specifications
- Brand: ASG
- Calibre: 4.5mm / .177 steel BBs
- Capacity: 20 rounds
- Power Source: 12g CO2 cartridge (sold separately)
- Colour: Black
- Compatible Model: STI Combat Master CO2 Air Pistol
- Barcode EAN: 5707843099295
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Delivery Information
Affordable Shipping – Starting from Just £2.50
Our delivery prices begin at only £2.50 for UK mainland orders, with free standard delivery available on all orders over £100*. To quickly find out the exact shipping cost for your items, simply add everything to your basket. In the basket, you'll see a link under the subtotal titled "Estimate Shipping & Tax"—click this, enter your delivery details, and you’ll get a full quote including whether you qualify for free shipping.
Free Shipping Offers
- UK Mainland: Free on orders over £100*
- Northern Ireland, Republic of Ireland, Scottish Highlands & Islands, and Isle of Man: Free on orders over £100*
- Channel Islands: Unfortunately, we do not offer free shipping to this region
*Free shipping is a 5 working day service. For example, an order placed on Monday would typically arrive the following Monday.
Mainland UK Delivery Options
- Royal Mail: From £2.50 (2 working days, price based on weight)
- Economy Delivery: £4.95 flat rate (2–4 working days)
- Express Delivery: £6.95 flat rate (1–2 working days)
Working days exclude Saturdays, Sundays, and public holidays. Need your order on a Saturday? We can arrange this for £20—please contact us directly after placing your order to pay the balance.
Delivery Prices – Outside Mainland UK
- Northern Ireland: From £5.95
- Scottish Highlands & Islands: From £5.95
- Isle of Man: From £5.95
- Republic of Ireland: £6.95 flat rate (any size order)
- Channel Islands: £7.95 flat rate (any size order)
We strive to keep our delivery charges as fair and straightforward as possible, with clear options to suit all needs and budgets.
