Harrington & Richardson M16A1 5.56 NATO 20" Threaded Barrel - 20 Rd

Harrington & Richardson M16A1 5.56 NATO 20" Threaded Barrel - 20 Rd

The Harrington & Richardson M16A1 5.56 NATO Rifle is a faithful revival of one of America’s most iconic service rifles—blending classic military styling with modern manufacturing precision. Built for enthusiasts who appreciate history as much as performance, this semi-automatic M16A1 delivers an authentic retro shooting experience with dependable reliability.

From its fixed stock and A1 pistol grip to the unmistakable triangular handguard, every detail reflects the original design that defined a generation. At its core is a 20" pencil-profile barrel crafted from 4150 Chrome Moly Vanadium steel, featuring chrome lining for durability and a 1:12 twist rate optimized for classic 5.56 NATO loads.

The upper receiver is forged from 7075-T6 aluminum using proprietary NoDak Spud tooling, ensuring both authenticity and strength. Paired with a forged aluminum lower and retro fire control group, this rifle offers smooth operation and a true-to-form shooting feel. The integrated carry handle and iron sights complete the package, delivering a timeless platform ready for the range or collection.

Authentic M16A1 Design
Classic retro styling with fixed stock, A1 grip, and carry handle for a true historical experience

20" Pencil Barrel
Lightweight profile improves handling while maintaining accuracy and balance

Chrome-Lined Bore
Enhances durability, corrosion resistance, and long-term performance

1:12 Twist Rate
Optimized for traditional 5.56 NATO projectiles for period-correct performance

Triangular Handguard
Classic A1 design with integrated heat shields for improved comfort

Forged 7075-T6 Upper Receiver
Durable construction using NoDak Spud dies for authenticity and strength

Retro Lower Receiver
Forged aluminum lower with classic A1 furniture and fire control group

Carry Handle Iron Sights
Fixed sights provide reliable, no-frills aiming solution

Threaded Barrel
1/2x28 threading allows compatibility with muzzle devices

Rifle-Length Gas System
Smooth cycling and reduced recoil impulse for consistent shooting

Specifications

• Caliber: 5.56 NATO
• Action: Semi-automatic
• Platform: AR-style rifle (M16A1 pattern)
• Barrel Length: 20 inches
• Barrel Profile: Pencil
• Barrel Material: 4150 Chrome Moly Vanadium steel
• Barrel Finish: Parkerized with chrome lining
• Twist Rate: 1:12
• Thread Pitch: 1/2x28
• Gas System: Rifle-length
• Upper Receiver: Forged 7075-T6 aluminum (NoDak Spud dies)
• Upper Feature: M16A1 pattern without feed ramps
• Lower Receiver: Forged aluminum with retro H&R fire control group
• Handguard: M16A1 triangular with heat shields
• Stock: Fixed A1 stock
• Grip: A1 pistol grip
• Sights: Integrated carry handle iron sights
• Finish: Black anodized
• Capacity: 20 rounds
• Magazine Included: 1