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SA-AR-1 ''Doberman'' Mod 3 (AV-97M3) family

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Description

The Doberman family just got some twice-removed cousins back.
(And also recently renamed, from the commercial designation of AR-1 to the service title of AV-97 - or, Avtomat Vintovka (Automatic Rifle of 1997))

Removed from this image is the MAR (Medium Automatic Rifle; Squad Automatic Weapon Type 2) variant with the Standard handguard, which is replaced by the accurised SR-3 (Sniper Rifle Type 3 DMR) variant and the CS-3 (Combat Shotgun Type 3) shotgun variant. The SR-3 here is the Police variant I've uploaded before, but with a threaded muzzle. Bipod still needs to be drawn, and will be dealt with as soon as I'm free from pornblocker tyranny and can access all my Harris Bipod references.
The MAR has had its barrel cut down from a lulzy 30" to a more reasonable 25.5", on a par with the PK machine gun. The barrel is also actually a HBAR now, based upon Israeli FAL HBAR dimensions, but extended to its 25.5" length.

The CS-3 (also known as the Doberman-12) is a 12-gauge 2.75" conversion of the Doberman system. Aside from altered bolt face and a bored-out HBAR, the system requires little modification to accept a 2.75" 12ga shell. The barrel, magazine and well, and ejection port are all already large enough (at maximum dimension) to accommodate shotshells. The magazine is modified from a 20-round conventional magazine from the Doberman, and holds five shells. A projected extended casket magazine will have a capacity of twelve rounds.
The Doberman-12 uses the same receiver top cover as the SR-3, and does not use the reciprocating piston tube jacket of the rest of the family, due to lower powered exhaust gases to power the system. The Doberman-12 does retain the dual charging handles, yet they do not reciprocate.

The SR-3 and CS-3 both have one of the three possible firing modes removed - the SR-3 gains a second safety position in addition to the push-through button safety (from its intent as a police rifle) and semi-automatic fire only; the CS-3 is capable of semi and fully automatic fire.
Despite their similar overall sizes, the bull barrels used for the SR-3 DMR and SAW-2 MAR are very different. The SR-3's barrel uses an uncommon octagonal polygonal rifling pattern, and is constructed largely of carbon fibre to keep weight and heat buildup low. The MAR's (hollowed out to 12ga/18.5mm for the CS-3) is constructed and rifled conventionally, as it is not intended for match or marksman purposes (though can easily be deployed in the marksman role with its single and three-round burst firing modes), and is typically produced and issued in higher numbers than the specialist SR-3.

Not depicted - SR-3 with 18" unthreaded barrel (Civilian variant), SR-3 bipod (as already stated) CS-3 with 16" shortened barrel, some handguard variations (due to space).
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Comments10
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doug7070's avatar
Great design with a really good ergonomic feel to it.
The only thing that i think could be added would be a switchable ambidextrous ejection port, since you already seem to have a dual-side charging handle.