Brügger & Thomet APC9
Brügger & Thomet2011–presentContemporary
Also known as APC9, Advanced Police Carbine
Image credit
- Title
- File:B&T APC 9 K side profile.jpg
- Author
- PEO Soldier
- Licence
- Public domain
- Source
- https://commons.wikimedia.org/wiki/File:B&T_APC_9_K_side_profile.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- v359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 175 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Muzzle velocity is calculated
nearest sourced barrel length, no extrapolation
Inputs
- v at 101.6 mm359.7 m/s1,180 fpsverifiedsource1180 fps as published.
Assumptions
- This figure belongs to a 101.6 mm barrel. It is shown because it is the closest measurement that exists, not because it applies here.
1 of 1 inputs link to their source.
How Loaded mass is calculated
m_loaded = m_empty + m_magazine + n · m_cartridge
Not calculated: m_magazine has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- One magazine, filled to the stated capacity. Spare magazines, optics, slings and lights are the owner’s, not the arm’s.
No input on this calculation carries a clickable source yet.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm2.5 kg5.512 lbestimatedFrom the Wikipedia infobox, uncited there. Stated with an empty 30-round magazine and a red dot sight fitted, not a bare-receiver mass.
- v_recoil1.072 m/s3.518 fpsestimated
Assumptions
- Propellant gas momentum is excluded: ARMAG does not record charge weights. This is therefore a lower bound on the real free recoil, consistent between entries but smaller than a figure that includes the gas term.
- Free recoil: the arm is unrestrained. Stock design, muzzle devices, stance and shooter mass are not modelled, because none of them is a property of the arm.
No input on this calculation carries a clickable source yet.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity30estimatedFrom the Wikipedia infobox, uncited there: the APC9 accepts 15-, 20-, 25- and 30-round B&T MP9-pattern box magazines; 30 is the largest offered.
No input on this calculation carries a clickable source yet.
Derived figures
Computed from the sourced values above. Open ƒ on any figure for the formula, its inputs, and the assumptions it makes.
How Momentum is calculated
p = m · v
Inputs
- m7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- v359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 175 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Sectional density is calculated
SD = mass(gr) / (7000 · diameter(in)²)
Inputs
- mass7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- diameter9.03 mm0.3555 inverifiedsourceCartridge maximum, dimension G1.
Assumptions
- Reported in the conventional lb/in² so it is directly comparable with published figures.
2 of 2 inputs link to their source.
How Power factor is calculated
PF = mass(gr) · velocity(fps) / 1000
Inputs
- mass7.452 g115.0 grverifiedsource115 gr as published, converted to grams.
- velocity359.7 m/s1,180 fpsverifiedMeasured with a 101.6 mm barrel, not this arm's 175 mm. Velocity outside the sourced range is not projected.
Assumptions
- A competition classification defined by the IPSC and USPSA rulebooks, stated in their units. It describes a scoring category, not an effect.
1 of 2 inputs link to their source.
How Magazine dump is calculated
t = (n − 1) / (rpm / 60)
Inputs
- n30estimatedFrom the Wikipedia infobox, uncited there: the APC9 accepts 15-, 20-, 25- and 30-round B&T MP9-pattern box magazines; 30 is the largest offered.
- rpm1,080 rpmestimatedFrom the Wikipedia infobox, uncited there and given as a single figure rather than a range.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
No input on this calculation carries a clickable source yet.
How Sight error at 1 mm is calculated
θ = atan(misalignment / sight radius)
Not calculated: sight radius has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- Shows what a stated aiming error costs. The misalignment is the reader’s figure; the site does not claim how well anyone aims.
No input on this calculation carries a clickable source yet.
Specifications
Every row here is generated from the schema, so a figure recorded on this entry cannot be missing from the table, and the same rows, read the same way, are what the comparison shows.
Identity
- Type
- Submachine gun
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Fully automatic
- Operating system
- Blowback, simple
- Designed in
- Switzerland
- Produced in
- Introduced
- 2011
- Production
- 2011–present
Dimensions and mass
- Mass, empty
- 2.5 kg5.512 lbestimated
From the Wikipedia infobox, uncited there. Stated with an empty 30-round magazine and a red dot sight fitted, not a bare-receiver mass.
- Magazine, empty
- not recorded
- Length
- 597 mm23.50 inestimated
From the Wikipedia infobox, uncited there. Stock unfolded; folded length is 385 mm.
- Length, folded
- 385 mm15.16 inestimated
From the Wikipedia infobox, uncited there.
- Width
- not recorded
- Height
- not recorded
- Barrel length
- 175 mm6.890 inestimated
From the Wikipedia infobox, uncited there. The standard APC9 barrel; the APC9 K variant uses a 110 mm barrel.
Sights and rifling
- Sight radius
- not recorded
- Sight height over bore
- not recorded
- Rifling twist
- not recorded
- Twist direction
- not recorded
- Grooves
- not recorded
- Sight graduation
- not recorded
Operation
- Cyclic rate
- 1,080 rpmestimated
From the Wikipedia infobox, uncited there and given as a single figure rather than a range.
- Trigger pull
- not recorded
- Effective range
- 100 m109.4 ydestimated
From the Wikipedia infobox, uncited there.
- Units produced
- not recorded
- Launch price
- not recorded
Chamberings
- 9x19mm Parabellumprimary30 rounds
- .40 S&Wnot recorded rounds
- 10mm Autonot recorded rounds
- .45 ACPnot recorded rounds
Scale
A to-scale outline against family siblings. The dimensions are sourced; the shape is a representative outline for the type, and says so.
- Brügger & Thomet APC9597 mm23.50 inheight not recorded
Representative outline: the dimensions are sourced, the shape is not. Overall length, and barrel length where recorded, are drawn from this entry's own figures; the profile is a generic one for the firearm type and says nothing about this arm's actual contours. Brügger & Thomet APC9 records no height, so its outline is drawn at the type's proportion. That height is part of the shape, not a measurement.
Gallery
Image credit
- Title
- FORT DIX-RANGE 33 733MP HHD Train with the APC9K small submachine gun. May 3rd 2023
- Author
- Daniel Amburg
- Licence
- Public domain
- Source
- https://www.dvidshub.net/image/7777071/fort-dix-range-33-733mp-hhd-train-with-apc9k-small-submachine-gun-may-3rd-2023
- Note
- Work of the United States Government, uncopyrighted under 17 U.S.C. §105: photographed for the Army (USASA, Fort Dix), VIRIN 230503-A-IE493-059. DVIDS states no separate licence per asset.
Detail
The APC9 is Brügger & Thomet’s second-generation submachine gun, introduced in 2011 as a design the Swiss maker built to be cheaper to produce than the intermediate-cartridge carbines that were displacing submachine guns from police and military service at the time. It carries over the pistol-calibre magazines B&T had already sold with its earlier MP9, but is a fresh design rather than a development of it, with a polymer lower receiver, magazine and folding stock alongside an aerospace-grade alloy upper.
Mechanically the APC9 is a straight blowback arm firing from a closed bolt, with a proprietary hydraulic buffer built into the receiver’s back plate to soften recoil rather than the roller- or lever-delayed systems some contemporaries use to tame a blowback pistol-calibre gun. Its barrel uses locking lugs in the H&K MP5 style, and the trigger group is functionally the same unit fitted to the AR-15 family, which lets it accept a wide range of aftermarket AR-pattern parts. B&T states more than half of the APC’s parts carry across its different chambering variants unchanged.
The APC9 is the pistol-calibre branch of a wider APC family; B&T also sells it rebarrelled for .40 S&W, 10mm Auto and .45 ACP, chamberings that share the same blowback action and are recorded on this page as alternative chamberings of the same design. The APC556 and APC308 variants are a different design in substance rather than name: they fire 5.56×45mm NATO and 7.62×51mm NATO respectively from a gas-operated rotating-bolt action rather than the APC9’s blowback, which changes both the operating system and the primary cartridge family, so each has its own entry. In 2019 the U.S. Army’s Sub Compact Weapon programme selected the APC9K variant, and the type has since been adopted by several police and special-operations units, including in Argentina and Lithuania.
No maker specification sheet for the APC9 was found with figures independent of Wikipedia’s uncited infobox, so the mass, length, barrel length, cyclic rate and effective range on this page are recorded as estimated rather than verified. No magazine capacity for the .40 S&W, 10mm Auto or .45 ACP chamberings is sourced, and no rifling twist rate is published for any chambering.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- Brügger & Thomet APC · Wikipedia · 1373702344 · read 2026-09-24 · CC BY-SA 4.0
Last verified 2026-09-24 · review status: agent-populated