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  • Archwick B&T APC9 HPA SMG charging handle and ejection port detail
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Archwick B&T Air APC9 Mechanical HPA SMG Series

Archwick B&T Air APC9 Mechanical HPA SMG Series

£629.95
£629.95
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In stock

Version: APC9K

DETAILS

SKU: 8173610168
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📖 New to HPA? This runs on external high pressure air — it needs a tank, a regulator and a line before it will fire a shot. Read our complete HPA guide before buying.
A licensed B&T Air APC9 with an all-mechanical HPA engine. No battery, no board, no app. Archwick built these around a MechLabs X-Mod engine, which actuates mechanically rather than through a solenoid and a control unit. Four configurations, all in black.

Nearly every HPA gun on the market is electro-pneumatic: a board reads the trigger, a solenoid opens, air moves. The X-Mod does away with that layer. In Archwick's own words it "delivers immediate mechanical actuation, strong trigger response, and full-auto capability without electronics", and they state plainly that no battery is required.

That is the reason to buy one. There is nothing to charge, nothing to pair, no firmware, and nothing to fail in the wet because there are no electronics to get wet. For a CQB gun that lives in a bag and comes out twice a month, removing the battery from the equation removes most of what goes wrong.

It is also not a converted AEG. Archwick are explicit that the APC9 HPA system was engineered around the APC9 architecture from the ground up, with custom nozzle geometry, stabilised hop-up alignment and an 80 durometer bucking. The receiver, handguard and stock are 6061-T6 aluminium with a hard coat anodised finish.

Four configurations share that engine and differ outside. The APC9K is the compact one. The PRO is mid-sized with a side-folding stock. The SD Compact and the APC9K SD2 are the integrated suppressor-style builds, the SD2 with an optional second-stage extension that changes its length considerably. Pick on the table below, because the barrel, the thread and the weight all change with it.

What you need to run it

Item Notes
HPA tank Not included — see HPA tanks
Regulator Required and not included. Archwick recommend 80 to 120 PSI — see HPA regulators
Air line Not included — see HPA lines
Battery None. The mechanical engine does not use one
Magazine One B&T Air APC9 AEG magazine is included, 100 rounds
Muzzle devices The APC9K and PRO are 12mm counter-clockwise. The two SD builds are not threaded

Specifications

Specification Detail
Platform HPA SMG — B&T Air APC9
Licence Officially licensed B&T Air product
Engine MechLabs X-Mod, all-mechanical
Electronics None. No FCU, no board, no battery
Fire modes Safe, semi and full-auto, where permitted
Recommended pressure 80 to 120 PSI
Output energy 0.9 to 1.2 joules
Hop-up Adjustable, with stabilised HPA hop-up alignment
Bucking 80 durometer
Body material 6061-T6 aluminium, hard coat anodised
Handguard material 6061-T6 aluminium, hard coat anodised
Stock material 6061-T6 aluminium, hard coat anodised, with diecast aluminium
Colour Black
Magazine B&T Air APC9 AEG magazine, 100 rounds, polymer
In the box The SMG, one 100-round magazine, a user manual and the original packaging
Not included Tank, regulator, airline, BBs and protective equipment
Manufacturer Archwick, New Taipei City

The four configurations

Configuration Inner barrel Front end Muzzle thread Length Weight
APC9K 129mm Short, compact profile 12mm counter-clockwise 380 to 550mm 1,340g
APC9 PRO 167mm 172mm with a Trilug muzzle device 12mm counter-clockwise 393 to 610mm 1,420g
APC9 SD Compact 200mm 205mm integrated suppressor-style Not threaded 393 to 645mm 1,580g
APC9K SD2 129mm 110mm, or 270mm with the optional stage 2 extension Not threaded 393 to 570mm 2,080g

Output varies with your regulator setting, BB weight, air pressure and your site limit, so treat the 0.9 to 1.2 joule figure as the range the engine covers rather than a number it arrives at.

Frequently asked questions

Does it really need no battery? Correct. The X-Mod is an all-mechanical engine, so there is no battery, no control unit and no app. You still need a tank, a regulator and a line.

What pressure should I run? Archwick recommend 80 to 120 PSI. Set it on your regulator, then chrono at the site, every time.

Which configuration should I buy? The APC9K if you want the smallest gun, the PRO if you want a mid-sized one with a folding stock, and one of the SD builds if you want the integrated suppressor look. The table above has the barrel, thread and weight for each.

Can I fit a 14mm tracer? Only on the APC9K and the PRO, which are 12mm counter-clockwise, and only with a thread adaptor. The SD Compact and the APC9K SD2 are not threaded at all.

What magazines does it take? B&T Air APC9 AEG magazines at 100 rounds. One comes with the gun and they are sold in boxes of five.

Is a mechanical engine less tunable? You tune it with air rather than software. Pressure is your main control, and the adjustable hop does the rest. What you give up is app profiles; what you gain is one less thing to go wrong.

⚠ Always run a secondary regulator. Never put tank pressure straight into the engine. Set your output before you shoot, and chrono at the site every time.
⚠ UKARA: As a realistic imitation firearm, this product requires UKARA registration or a valid defence. We verify at checkout. Register by playing 3 games over 56+ days at Skirmish Wycombe Airsoft.
💡 Titan Forge Airsoft tip: A mechanical engine puts all the tuning on your regulator, so buy a good one — it is doing the job a control board would otherwise share. See HPA rifles.