The APC9 is the Brügger & Thomet SMG chosen by the US Army, and the Archwick B&T Air APC9K-SD2 is its officially licensed gas blowback version. This SD2 model wears the long mock suppressor, which gives the short K-length gun a balanced, purposeful look without adding much weight at the muzzle.
The upper receiver, handguard and suppressor shroud are CNC machined from 6061-T6 aluminium with a hard anodised finish, and the bolt and key internal parts are S45C steel. This bundle adds two Archwick APC9 gas magazines and a 600ml can of Puff Dino green gas, so everything you need to start shooting is in one order.
Key Features
- Officially licensed B&T Air APC9K-SD2 – correct markings and proportions
- CNC 6061-T6 aluminium upper, handguard and mock suppressor – hard anodised for a durable finish
- S45C steel bolt lock, buffer, feed nozzle and outer barrel – built to handle gas blowback cycling
- TDC direct-pressure hop-up with TM MWS-spec bucking – easy to fine-tune and easy to find parts for
- 6.03mm precision inner barrel – consistent groups at CQB ranges
- Bundle extras – 2x Archwick APC9 gas mags and 600ml Puff Dino green gas included
Real-World Use Cases
The APC9K-SD2 is made for indoor and urban sites. It is short with the stock collapsed, quick to bring up, and the gas blowback gives a sharp kick that makes every shot feel deliberate.
The non-reciprocating ambidextrous charging handle and M-LOK slots on the handguard let you set it up for either hand, with a light or grip where you want it. Two mags in the box means you can run one while the other warms up.
Technical Specifications
- Licence: B&T Air (Archwick)
- Power system: Gas blowback (green gas)
- Upper receiver / handguard: CNC 6061-T6 aluminium, Type III hard anodised
- Internals: S45C steel bolt lock, buffer and feed nozzle
- Inner barrel: 129mm, 6.03mm precision honed
- Hop-up: TDC direct-pressure unit, TM MWS-spec bucking
- Muzzle: Steel outer barrel, tri-lug flash hider, 12mm to 14mm CCW adaptor
- Stock: Multi-position steel telescoping stock with rubber butt pad
- Sights: IMI-style flip-up sights
- Length: 382mm folded / 562mm extended; 710mm with full stock and extension barrel
- Weight: 3300g (net)
- Bundle includes: 2x Archwick APC9 gas magazines, Puff Dino 600ml green gas
UK Legal & Site Notes
This is a realistic imitation firearm (RIF). To buy one in the UK you need a valid defence under the VCRA, such as UKARA registration through a recognised skirmish site. Gas output drops as the temperature falls, so chrono on the day with the gas you plan to use and stay inside your site’s limits.
Use a good-quality green gas and store the magazines with a small amount of gas in them, which keeps the seals from drying out. A drop of silicone oil on the fill valve and the gas route seal every few games helps prevent leaks. On cold days, keep spare magazines in an inside pocket so they stay warm, and use polished, good-quality BBs with the hop-up set for the weight you play with.
Order the Archwick B&T APC9K-SD2 GBB from Airsoftdirect for fast UK delivery. If you have a question about fit, setup or site rules before you buy, get in touch and we will help.




