Used Harrington & Richardson M16A1 Retro Series H&R 5.56 20" M16-A1 AR15 AR-15

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How Buying WorksEnding October 27, 2026 at 9:45 PM

Key Features

  • Item Type: Semi Auto Rifles
  • Action: AR-15 Direct Impingement
  • Manufacturer: Harrington & Richardson (H&R)
  • Capacity: 20 1
  • Model: M16A1
  • Barrel Length: 20"
  • Caliber: 5.56mm NATO
  • Finish: Gray Anodized
  • Overall Condition: Very Good
  • Year Manufactured: 2023-2026

Product Description

    Harrington & Richardson H&R M16A1 Retro Series 5.56 NATO Semi-Auto Rifle, 20" Pencil Barrel, Fixed Iron Sights, Gray Anodized

    This H&R M16A1 Retro Series is a recent-production, U.S.-made semi-automatic rifle that faithfully mirrors the classic A1 pattern. It features forged aluminum receivers with a gray anodized retro finish, fixed iron sights with A1-style stock and pistol grip, round, ribbed, two-piece rifle-length handguards (A2 type), a 20" pencil-profile barrel with 1/2x28 threads and an A1 birdcage flash hider, and GI-style rollmarks that collectors appreciate. It comes with a 20-round steel straight-body AR-15/M16 magazine (aftermarket steel, not the aluminum USGI type).

    Condition

    Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.

    Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.

    Bore Rifling: Excellent Rifling - Sharp lands and grooves.

    Specific Condition Notes: Minor scratches and small blemishes are present from light handling. The crush washer on the muzzle device is cracked.

    What's Included
    • Harrington & Richardson M16A1 Retro Series semi-automatic rifle (5.56 NATO)
    • 1x 20-round steel straight-body AR-15/M16 magazine (aftermarket steel, not the aluminum USGI type)

    Forged receivers and period-correct markings set this rifle apart. The left receiver bears the H&R circle-lion logo with "PROPERTY OF U.S. GOVT. M16A1 CAL. 5.56MM," while the right side is marked "HARRINGTON & RICHARDSON WEST COLUMBIA, SC U.S.A." Selector legends follow the GI-style SAFE–SEMI–AUTO format.

    The upper has the fixed A1 carry handle with forward assist and no brass deflector, matching the classic configuration.

    The 20" pencil-profile barrel uses a rifle-length gas system and is threaded 1/2x28 with an A1 birdcage flash hider. An A-frame front sight base with bayonet lug pairs with the fixed A1 carry-handle rear sight for the original sight picture buyers expect from an A1-pattern rifle.

    Furniture is true to form: a fixed A1-length polymer stock in a dark gray/black tone with a ribbed buttplate and rear sling swivel, an A1-style pistol grip, and round, ribbed, two-piece rifle-length handguards (A2 type) with a round front cap, retained by a round slip ring. Length of pull measures 13.0".

    This semi-automatic, direct-impingement rifle accepts STANAG-pattern magazines and ships with a 20-round steel straight-body AR-15/M16 magazine (aftermarket steel, not the aluminum USGI type). It is a recent H&R Retro Series release, produced in the USA, and captures the essential look and handling of the M16A1 while remaining a modern reproduction.

Specifications

Item TypeSemi Auto Rifles
ManufacturerHarrington & Richardson (H&R)
ModelM16A1
SubmodelRetro Series
Caliber5.56mm NATO
Overall ConditionVery Good
Bore ConditionExcellent
ActionAR-15 Direct Impingement
Capacity20 1
Barrel Length20"
FinishGray Anodized
Stock/GripsA1-style pistol grip
Sight/OpticA1 fixed iron sights
Year Manufactured2023-2026
Country of OriginUnited States