Image credit
- Title
- File:AR10 Armalite vue d'ensemble noBG.jpg
- Author
- Le-boulanger(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:AR10_Armalite_vue_d'ensemble_noBG.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- v853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 528 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 558.8 mm853 m/s2,799 fpsverifiedsourceBallistics table of the cited article.
Assumptions
- This figure belongs to a 558.8 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.
2 of 4 inputs link to their source.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm3.67 kg8.091 lbestimatedsourcemidpoint of a published 3.29-4.05 kg range without magazine, spanning different production models; no inline citation is given in the infobox.
- v_recoil2.214 m/s7.263 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.
1 of 2 inputs link to their source.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity20estimatedsource20-round detachable box magazine, from the infobox, uncited there.
1 of 1 inputs link to their source.
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
- m9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- v853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 528 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
- mass9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- diameter7.85 mm0.3091 inestimatedsourceNo free dimensional standard publishes the NATO round under that name. Borrowed from the C.I.P. datasheet for the commercial .308 Winchester (G1), which shares the chamber; the two are not interchangeable at the pressure limit.
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
- mass9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- velocity853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 528 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
- n20estimatedsource20-round detachable box magazine, from the infobox, uncited there.
- rpm700 rpmestimatedsourcefully automatic rate; from the infobox, uncited there.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
2 of 2 inputs link to their source.
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
- Rifle
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Fully automatic
- Operating system
- Gas, direct impingement
- Roles
- Designed in
- United States
- Produced in
- Introduced
- 1956
- Production
- not recorded
Dimensions and mass
- Mass, empty
midpoint of a published 3.29-4.05 kg range without magazine, spanning different production models; no inline citation is given in the infobox.
- Magazine, empty
- not recorded
- Length
from the infobox; no inline citation is given there.
- Length, folded
- not recorded
- Width
- not recorded
- Height
- not recorded
- Barrel length
from the infobox; no inline citation is given there.
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
Chamberings
- 7.62×51mm NATOprimary20 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.
- ArmaLite AR-101,050 mm41.34 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. ArmaLite AR-10 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
- File:Eugene Stoner holding ArmaLite AR-10 prototype.jpg
- Author
- Armalite
- Licence
- Public domain
- Source
- https://commons.wikimedia.org/wiki/File:Eugene_Stoner_holding_ArmaLite_AR-10_prototype.jpg
Image credit
- Title
- File:Automatisch geweer Armalite AR 10 (2155 047264).jpg
- Author
- Fotoafdrukken Koninklijke Landmacht(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:Automatisch_geweer_Armalite_AR_10_(2155_047264).jpg
.jpg){kind=link}
Detail
Eugene Stoner designed the AR-10 at ArmaLite in the mid-1950s to compete for the US Army’s rifle replacement programme, which the M14 would eventually win. The rifle reached the trials stage but an experimental aluminium barrel with a steel liner burst during a Springfield Armory torture test in early 1957; ArmaLite substituted a conventional steel barrel within weeks, but the Army’s evaluators judged the design would need years more testing before it could be adopted and passed it over. What made the AR-10 distinctive was how light it was for a 7.62mm NATO battle rifle: an aluminium-alloy receiver and a fibreglass-reinforced pistol grip, handguard and buttstock, materials ArmaLite carried over from its aircraft-industry parent company, kept it well under most contemporaries’ weight in the same chambering.
The design outlived its American rejection through licensed production. Artillerie-Inrichtingen in the Netherlands began building it under licence from July 1957, producing several variants for export: Sudan bought around 2,500 rifles in 1958, and Portugal acquired several thousand more from 1960 for its paratroopers, who carried them through its colonial conflicts in Africa. The rifle Stoner built next, a scaled-down 5.56mm derivative that Colt would sell to the US Army as the M16, took the AR-10’s aluminium receiver, its in-line stock and its bolt-and-carrier gas system and carried them forward far more widely than the AR-10 itself ever achieved.
This entry’s weight, length, barrel length, cyclic rate and effective range all trace to the Wikipedia
infobox without an inline citation, so each is recorded as estimated; the published weight is itself a
range spanning different production variants, and the figure here is its midpoint. No twist rate is
published for the rifle, and no free dimensional standard exists for 7.62×51mm NATO independent of its
commercial equivalent, .308 Winchester.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- ArmaLite AR-10 · Wikipedia · 1367737893 · read 2026-09-09 · CC BY-SA 4.0
Last verified 2026-09-09 · review status: agent-populated