Who Makes It — Armscor, Derya, and a White Shotgun Called Stormtrooper

A Philippine brand, a Turkish factory, a distributor's colourway, and three published weights for one gun

Figure 1 — A Derya MK-12 in right-side profile against a white studio background, fitted with a collapsible AR-pattern stock and pistol grip. Everything that makes the Rock Island Armory VR80 recognisable is already here: the two-piece aluminium receiver in the AR pattern, the "BufferBolt System" legend on the bolt visible through the ejection port, the curved box magazine, the ventilated handguard and the long spiral-fluted barrel shroud at the muzzle. The receiver is marked "DERYA ARMS LTD. Made in Turkey."

The Rock Island Armory VR80 is a 12-gauge, gas-operated, magazine-fed semi-automatic shotgun built in the shape of an AR-15. It is sold in the United States by Armscor, a company whose history runs back to a Manila sporting-goods store in the 1930s, under a brand name — Rock Island Armory — that Armscor bought in 1985. It is designed and made by neither of those. The VR80 is a product of Derya Arms, a shotgun maker in Konya, Türkiye, which lists it in its own catalogue as the “Derya MK-12 VR-80”.

The gun documented in these volumes is a white one, sold as the “VR80 Stormtrooper White”. That name invites a connection to the Star Wars prop blasters documented elsewhere in this hub, and this volume closes that question with the maker’s own page before the rest of the dive begins.

1.1 What These Volumes Argue

Four claims run through the dive, and each is argued from a primary document — the maker’s own product pages, its two owner’s manuals, the ammunition makers’ own tables, and the 1947 patent behind the slug the gun is loaded with.

The VR80 is a slug gun only by configuration. Out of the box it is a 3-gun and home-defence shotgun with a five-round magazine and three screw-in chokes, two of which its own manual forbids slugs through. The gun documented here has been turned into something else — a smooth-bore slug gun with a rifled choke tube and a 1-6× magnified optic — and the dive is organised around whether that combination makes sense. Volumes 4 and 5 are the answer.

Its documentation contradicts itself, and the contradictions matter. The owner’s manual gives four different break-in round counts in one sixteen-page document. Its specification table carries the dimensions of a different shotgun, the VR60, figure for figure. Armscor’s own website gives two different weights for the black and the white versions of the same gun, and neither matches the manual or the Turkish factory’s figure. Volume 3 sets out which numbers to trust for what.

An AR-shaped shotgun is not an AR. It takes AR pistol grips and, with the right tube, AR stocks. Its trigger group, magazine, handguard, bolt and gas system are its own. Volume 2 separates the two, part by part, with the evidence for each.

How it runs depends on the ammunition more than on anything an owner bolts on. The maker sets a load floor — 1,250 ft/s and 1⅛ oz — below which it does not promise the gun will cycle, and it warrants function only with factory ammunition and the factory magazine. Volume 3 covers the gas system that floor protects, and how to keep it working.

1.2 The VR80 in One Table

Figures are the maker’s own, and where the maker’s own sources disagree, each is given with its source rather than reconciled.

Table 1 — The VR80 in One Table


Marketed as	Rock Island Armory VR80 (Armscor Precision International, Pahrump, Nevada)
Designed and made by	Derya Arms, Konya, Türkiye — catalogued as “Derya MK-12 VR-80”
Action	Gas-operated semi-automatic; the piston and operating sleeve ride concentrically on the barrel (Vol 3)
Gauge and chamber	12 gauge; “2¾ / 3"" — both manuals; “ALL PRODUCTS HAVE 3” (76MM) CHAMBERS”
Magazine	Detachable box; 5 rounds (US standard)
Barrel	20 in (500 mm), smooth bore, screw-in chokes
Chokes supplied	Full, Modified, Improved Cylinder
Receivers	Upper and lower “constructed from 7075 T6 aluminum” (Armscor product page)
Weight	7.39 lb (manual) · 7.7 lb (3.5 kg, Derya) · 8.27 lb (Armscor, black VR80) · 9.03 lb (Armscor, Stormtrooper)
Overall length	39 in (manual) · 40 in (Armscor product pages)
MSRP (US), read 19 Sept 2026	$695 black VR80 · $798 Stormtrooper White

The weight row is not a typographical accident; it is Section 1.6.

1.3 Armscor, from a Manila Store to Pahrump

Armscor tells its own history as a timeline on its website, and the dates below are quoted from it.¹ It begins not with guns but with retail. In 1930 a general merchandise store was bought by Arthur Hileman, described as an ex-US hospital corpsman, and Squires, Bingham & Co. was renamed Sportsmen’s Headquarters. In 1941 Don Celso Tuason bought it; in 1942, with the Philippines at war, the company fell back on its clothing and haberdashery business.

Manufacturing came after the war. In 1952, in Armscor’s words, Don Celso Tuason “obtains the first license in his country to begin firearm and ammunition manufacturing”, and the company was renamed Squires Bingham Manufacturing Inc. He handed control to his three sons — Bolo, Butch and Concoy — in 1965. In 1980 the business was reorganised as the Arms Corporation of the Philippines, abbreviated ARMSCOR, with Demetrio “Bolo” Tuason as chairman and president.

Figure 2 — A street view on Bonny Serrano Avenue, Cubao, Quezon City, with a multi-storey building at right carrying the sign "SQUIRES BINGHAM INTERNATIONAL, INC. — GUNS · AMMO · ACCESSORIES". The photograph … — Figure 2 — A street view on Bonny Serrano Avenue, Cubao, Quezon City, with a multi-storey building at right carrying the sign "SQUIRES BINGHAM INTERNATIONAL, INC. — GUNS · AMMO · ACCESSORIES". The photograph is filed on Commons under Armscor. The Squires Bingham name, which Armscor's own timeline traces to the pre-war Manila business renamed in 1930, is still over a Quezon City gun shop in 2016; the corporate relationship between this shop and Armscor is not stated in any source read here.

The American story starts in 1985, when, per the same timeline, “Armscor Precision International opens its first office in the US” and “Armscor acquires the Rock Island Armory brand”. Later entries record ISO 9001 certification (1997), a production facility in Stevensville, Montana (2011), Martin Tuason becoming president (2012), the launch of the parts site advancedtactical.com (2014) and the opening of a US manufacturing plant in Pahrump, Nevada (2016). The VR80 manual gives the Pahrump address — 150 North Smart Way — for warranty returns.²

⚠ The timeline does not say what “Rock Island Armory” was before 1985, and nothing read for this dive does. The name is not the United States Army’s Rock Island Arsenal on the Mississippi, and nothing here should be read as suggesting a link to it. Who held the brand before Armscor could not be established from a primary source and is left open.

What the brand has chiefly meant in the United States since then is the 1911 pistol. It is the product for which Rock Island Armory is best known, and it leaves a trace in an unexpected place — the shotgun’s own warranty card (Section 1.7).

Figure 3 — A Rock Island Armory "Tactical" 1911 pistol photographed in 2009 in its foam case, with wooden grip panels, a skeletonised hammer and a spare stainless magazine. The 1911 is the product the Rock Is… — Figure 3 — A Rock Island Armory "Tactical" 1911 pistol photographed in 2009 in its foam case, with wooden grip panels, a skeletonised hammer and a spare stainless magazine. The 1911 is the product the Rock Island Armory name built its American reputation on; the shotgun line came decades later and from a different factory.

1.4 Derya Arms, the Factory Behind the Gun

Armscor’s own pages do not say where the VR80 is made. Two primary documents do.

The first is the manual. Its maintenance page credits the gun’s named features to their owner: the “DAXOS® (Dual Axis Operation Sistem) Ambidextrous Cocking Handle”, the “BufferBolt® System”, the “BufferTHS™” and a “Patented ThumbHole Design”, with the line “Specially developed system to avoid damages in the receiver caused by recoil. Patented by DERYA®.”² The spelling “Sistem” is itself a small clue to the document’s origin.

The second is the factory’s own catalogue. Derya Arms lists, under the heading of its MK-12 AR-style magazine-fed shotgun series, a product titled “Derya MK-12 VR-80”, with the product code “VR-80”, a 50 cm (20 in) barrel, 2¾ and 3 in chambering, “Fixed” stock and magazine options of 2+1, 5+1 and 10+1.³ The same catalogue carries a “VR Series” that includes a VR60 and a VR70 — the names Armscor sells in the United States. The VR designations are Derya’s, not Armscor’s.

Derya describes itself as “Founded in 1998 in Konya, Türkiye”, with a headquarters in the Beyşehir Organized Industrial Zone (37,000 m²), a newer plant in the Konya Organized Industrial Zone (40,000 m²), “nearly 400,000 units” of combined annual capacity, and about 90 per cent of production exported to “more than 86 countries”.⁴

The MK-12 photographs that open this volume make the family resemblance plain. The receiver carries “DERYA ARMS LTD. Made in Turkey”, the bolt visible through the ejection port carries the “BufferBolt System” legend, and the barrel shroud is the same spiral-fluted tube that the VR80 manual tells an owner to unscrew first.

Figure 4 — Close view of the Derya MK-12's receiver, right side: "MK-12" on the upper, the BufferBolt-marked bolt and its round charging knob in the ejection port, the AR-style safety selector with its fire a… — Figure 4 — Close view of the Derya MK-12's receiver, right side: "MK-12" on the upper, the BufferBolt-marked bolt and its round charging knob in the ejection port, the AR-style safety selector with its fire and safe symbols, a paddle lever above the front of the trigger guard, "DERYA ARMS LTD. Made in Turkey" on the magazine-well flank, and the curved polymer box magazine moulded with the Derya name.

⚠ The country-of-origin marking on a US-market VR80 was not confirmed for this dive. Imported guns carry an importer’s marking and normally the country of manufacture; reading those marks on the gun documented here would settle what the US version says. It is listed as an owed photograph in the README.

The Derya link matters for three practical reasons that recur through the dive. It explains why the manual reads as a translation, with machine-translated part names in the older VR60 edition (“Cock” for hammer, “Needle” for firing pin). It explains why parts and aftermarket support run through a small number of US specialists rather than through the AR-15 industry. And it means the same basic gun exists under other names — Mimtac’s trigger page, for example, lists the “VR80, MK12, GF25” together as the platforms it fits (Vol 2).

1.5 The Stormtrooper: a Colourway, Not a Model

Armscor’s semi-automatic shotgun page lists more than a dozen VR80 variants, and nearly all of them are distributor exclusives — a colour or furniture package sold through one wholesaler. Among them, read on 19 September 2026: a Rural King exclusive, Bangers’ Coyote Brown and Sniper Green, Sports South’s Smoke and Burnt Bronze, Hicks’ Midnight Bronze, Camfour’s Titanium Blue, Turner’s Tungsten Grey, and:⁵

“VR80 Stormtrooper White 5rd 12GA Lipseys Exclusive” — SKU VR80-STW

Its product page gives:⁶

Table 2 — The Stormtrooper: a Colourway, Not a Model


SKU	VR80-STW
Capacity	5+1
Barrel	20”
Overall length	40 in / 1150 mm
Weight	9.03 lb / 4.1 kg
Sights	Flip-up front and rear
Grips	”Fixed Thumbhole Polymer. Extra Honeycomb Stormtrooper Grip”
Finish	”Stormtrooper White Cerakote”
MSRP (US)	$798
Massachusetts compliant	Yes

So the Stormtrooper is a finish-and-furniture package on the standard VR80: white Cerakote, the factory thumbhole stock, and a second, separate “Honeycomb Stormtrooper” pistol grip in the box. It is not a different mechanism, and nothing in Volumes 2 and 3 changes for it.

⭐ Nothing on Armscor’s page connects it to Star Wars. There is no mention of Lucasfilm, Disney, a licence, a film or a prop. “Stormtrooper White” is a colour name, of a kind with “Sniper Green” and “Midnight Bronze”. The gun is not a replica of anything, and a marketing name is not a prop connection.

It is worth one step further, because the name suggests the wrong picture. The stormtrooper’s armour is white. The stormtrooper’s blaster is not. The E-11 prop was built on a British Sterling submachine gun, and the hub’s E-11 dive documents its hero finish as a parkerized black base (Vol 8). A white Stormtrooper VR80 is therefore coloured like the trooper’s armour, not like the weapon in the trooper’s hands. The shared ground between the two dives is limited to that name and to the fact that both guns wear AR-era fittings; readers interested in the prop should go to the E-11 dive, which owns that subject.

1.6 Three Weights for One Gun, and the VR60’s Numbers in the VR80’s Manual

The specification table at the top of this volume carries four weights. They come from four documents, and they are worth setting side by side because an owner who weighs the gun will match none of them exactly and deserves to know why.²³⁶⁷

Table 3 — Three Weights for One Gun, and the VR60's Numbers in the VR80's Manual

Source	Weight	Length	Width	Height
VR80 manual, 2018 and 04/2020 editions	7.39 lb (3.35 kg) empty	39 in (990 mm)	1.6 in (40 mm)	9 in (230 mm)
Derya catalogue, “MK-12 VR-80”	3.5 kg (7.7 lb)	—	—	—
Armscor product page, VR80 black	8.27 lb (3.75 kg)	40 in	2 in	7 in
Armscor product page, Stormtrooper	9.03 lb (4.1 kg)	40 in	2 in	7 in
Armscor product page, VR60	7.39 lb (3.35 kg)	39 in (990 mm)	1.6 in (40 mm)	9 in (230 mm)

⭐ The VR80 manual’s specification table matches the VR60’s product page in every dimension — the same 990 mm, the same 40 mm, the same 230 mm, the same 3.35 kg. The VR60’s own 2016 manual carries the same figures (7.38 lb there), plus a bead front sight and a “Mobile, Full, Modified, and Improved Cylinder” choke list. Both editions of the VR80 manual that Armscor links from its manuals page — the 2018 file and the 04/2020 file — reproduce the table with only the model name changed.²⁷ The match is exact on four figures; how it came about is not documented, and this dive does not guess. The practical conclusion is narrow: the manual’s dimensions describe the VR60, and should not be used as the VR80’s.

The gap between the black VR80 (8.27 lb) and the Stormtrooper (9.03 lb) on Armscor’s own pages is 0.76 lb. A Cerakote finish weighs a few grams. The difference is not explained on either page; a different furniture package or a data-entry difference are both possible and neither is established. The only reliable figure for the gun documented here is the one a scale gives, and it is listed as an owed measurement.

1.7 The Warranty Card Was Written for a Pistol

Both VR80 manuals end with the same warranty page, and so does the VR60’s. Most of it is specific and useful and is covered in Volume 3. Two lines are not about shotguns at all.²⁷

Under “THIS IS HOW YOU VOID YOUR WARRANTY” appears “Not properly reassembling your RIA Firearm resulting in damage, ie reverse plugs!” Under “LIMITS ON WARRANTY” appears “Finish, Holster wear, Scratches, Chemical damage”.

Holster wear is a handgun concept. “Reverse plugs” most plausibly refers to the recoil-spring plug of a 1911, which can be installed backwards — and the 1911 is Rock Island Armory’s signature product. That reading is an inference: the manual does not define the phrase. What is certain is that the shotgun’s warranty terms are company boilerplate shared across product lines, which is worth knowing before reading them as a considered statement about this gun. Volume 3 separates the clauses that bear on a VR80 owner from the ones that do not.

1.8 What This Dive Does Not Cover

Shooting technique and 3-gun practice. The VR80’s competition use is noted where it bears on configuration, and no further.
Load development. No charge weights appear anywhere in this dive; the maker warrants function only with factory ammunition (Vol 3), and the configuration documented here uses factory slugs.
Pump-action shotguns. The contrast between a gas gun and a pump — which runs anything the shooter feeds it — is the subject of the companion Remington 870 dive and is only summarised here (Vol 2).
Optic theory. Low-power variable optics and focal planes are covered in the Types of Scopes dive, and are linked rather than restated in Volume 5.
The E-11 prop. See Section 1.5.

1.9 Reading Order

Table 4 — Reading Order

Vol	Title	Read it for
1	Who Makes It	the maker, the brand, the Stormtrooper name, and which specifications to trust
2	The VR Family and the AR Question	how the VR60 became the VR80, and which AR-15 parts fit
3	How It Works, and How to Keep It Working	the gas system and bolt, the break-in, field strip, maintenance and repair
4	A Slug Through a Smooth Bore	Foster’s patent, the rifled choke tube, and the sabot alternative
5	50 to 150 Yards — the Ballistics, and Why a 1-6×	the makers’ own tables, what they reveal, and how the optic fits
6	The Gun Documented Here, and the Rules It Hunts Under	the configuration as of September 2026, and Michigan and federal limits

References

Armscor, “Heritage” timeline, https://www.armscor.com/about-us/heritage/, read 19 September 2026. All dates in §1.3 are quoted from this page. ↩
Armscor / Rock Island Armory, Users Manual VR80 Mag Fed Shotgun — Safety, Instruction and Parts Manual, dated 04/2020 on its warranty page, https://www.armscor.com/hubfs/RIA%20VR80%2004-2020.pdf (linked from the VR80 product page as its “Specifications Sheet”), read 19 September 2026. ↩ ↩² ↩³ ↩⁴ ↩⁵
Derya Arms, tactical product catalogue, https://www.deryaarms.com/urunler/tactical, and product page “Derya MK-12 VR-80”, https://www.deryaarms.com/urun/derya-mk-12-vr-80, both read 19 September 2026. ↩ ↩²
Derya Arms, “About Us”, https://www.deryaarms.com/about-us, read 19 September 2026. ↩
Armscor, semi-automatic shotgun listing, https://www.armscor.com/semi-auto, read 19 September 2026. ↩
Armscor, “VR80 Stormtrooper White 5rd 12GA”, https://www.armscor.com/firearms-list/vr80-stormtrooper-white-5rd-12ga; “VR80 5rd 12GA”, https://www.armscor.com/firearms-list/vr80-5rd-12ga; “VR60 Shotgun Standard 12GA 5rd”, https://www.armscor.com/firearms-list/vr60-shotgun-standard-12ga-5rd; all read 19 September 2026. Prices are MSRP as shown on those pages on that date. ↩ ↩²
Armscor manuals index, https://www.armscor.com/resources/manuals/, read 19 September 2026, and the two files it links: the earlier VR80 manual (“KK- Manual”, PDF created 17 May 2018) and the VR60 manual (“K - Manual”, PDF created 13 September 2016). ↩ ↩² ↩³