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Steyr AUG A3 M2 on a Bullpup

AI illustration of a similar part on the gun.

Bullpup · Rifle

Steyr AUG A3 M2

$2,000

Newest US AUG; ranked in 2026 bullpup guides and sold factory-chambered in 5.56 and .300 BLK (5/8x24 thread on .300 BLK).

Build with this part

Opens the builder with this part fitted. Other parts change only if they have to.

Specs

Calibers556, 300blk, 9mm
Barrel (in)16
Thread1/2x28
Typerifle

Pros and cons

Pros
  • Factory .300 BLK version on the shelf
  • Extended top rail standard
  • Same proven quick-change barrel system
Cons
  • Standard stock needs AUG magazines
  • Trigger still heavy from the factory

Works with

Works with: 556, 300blk, 9mm.

Other rifle options