High Standard HSA-15 5.56 NATO AR-15, 16 inch M4-Profile, Carbine Gas, Flat-Top with Detachable A2 Carry Handle
The High Standard HSA-15 is a USA-made AR-15 platform rifle with a 16 inch M4-profile barrel, 1:9 twist, and a carbine-length gas system. It features a flat-top Picatinny upper receiver paired with a detachable A2 carry handle, an A2 front sight base with bayonet lug, and a 6-position collapsible stock. This example is in very good condition and includes one 30-round magazine.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: The lower handguard exhibits mild play. The rifle's finish shows some scratches and blemishes. The chamber lugs display blemishing, while the chamber itself is bright.
What’s Included
- 1x 30-round ProMag polymer AR-15 magazine
This HSA-15 runs a semi-automatic, direct impingement system and is chambered in 5.56mm NATO with a 30+1 capacity. The 16 inch M4-profile barrel is threaded and fitted with an A2-pattern birdcage flash suppressor and crush washer, paired to a carbine-length gas system for a classic carbine configuration.
The upper receiver is a flat-top Picatinny type and comes with a detachable A2 carry handle secured by thumb-nut clamps. Sighting is handled by an A2 rear aperture in the carry handle and an A2 front sight post on the fixed front sight base, which also includes a bayonet lug and front sling swivel.
Receiver features include a brass deflector, forward assist, and an ejection-port cover. Controls are standard AR-15 pattern with a manual safety and SAFE/FIRE selector markings, along with a standard magazine release.
Furniture consists of a two-piece, carbine-length polymer handguard in a glacier-guard style, a 6-position collapsible stock, and an A2-style polymer pistol grip with a finger groove. The receivers are aluminum alloy, and the rifle is made in the USA.