SOLGW M4-89 LRF 13.7″ P&W 5.56 Rifle w/ NOX M89 Rail

MSRP: $2,050.00
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Sons of Liberty Gun Works, M4 89, Semi-automatic Rifle, AR, 223 Remington/556NATO, 13.7″ Pinned (16″ OAL) Barrel, Mid-length Gas System , NOX9 Muzzle Device, Vltor A5 Buffer System, Liberty Fighting Trigger, Liberty Charging Handle, Ambidextrous 60 Degree Q/STD Safety, 30 Rounds, 3 Magazines

The Sons of Liberty Gun Works M4-89 was designed to be an Ultimate Fighting Rifle. It features their new M89 Drive Lock Rail, Geissele Trigger, and the Vltor A5 buffer system. SOLGW has nothing to hide with its quality builds. This rifle comes with a NOX muzzle device and is pinned and welded to make it a non-NFA rifle, bringing it to a 16″ OAL.

LRF (Lower Receiver, Forward Controls Design) is a collaboration between Sons of Liberty Gunworks (SOLGW) and Forward Controls Design (FCD).

LRF was designed with duty and defense users in mind. Its changes from TDP-based lowers are based on ergonomics and better protection of magazine releases (both left and right side):

* Taller than the TDP spec magazine release fence on the right side to ensure the TDP spec magazine release button stays below the fence.

* Countersunk takedown pin hole on the left, when the user pushes the takedown pin in from the left side, the pin can be pushed in further, with more protrusion on the right to pull from.

* Built-in trigger guard with the same features as our TGF (Trigger guard, Forward Controls). TGF has more usable space forward of the trigger, not behind. It also has a “ramp” to facilitate magazine loading for users that use the rear spline of the magazine to index and “rock” the magazine into the mag well.

* Flared magazine well with a larger opening.

LRF’s changes are subtle and wholly functions based, a duty/defense firearm doesn’t concern itself with aesthetics, nor benefit from them. One will not find it decorated with lightning cuts/holes, or obnoxiously large logos.

A tastefully small Cygnus is engraved on the right side of the LRF magazine well to denote FCD’s involvement in the project’s development, one can easily miss or overlook it, and that’s the point, we don’t intend the LRF to be a walking billboard. It’s designed and made for work, not for show.

  • 13.7″ 556NATO Combat Barrel
  • M89 Handguard
  • Liberty Fighting Trigger
  • Liberty Charging Handle
  • NOX 9 Neutral Timed Muzzle Device
  • B5 Furniture

At Sons of Liberty Gun Works they believe in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality Bolt Carrier Group and a quality, accurate and long lasting barrel are the heart of a Combat Grade weapon. They believe in properly tuned weapons using the correct gas system length and quality buffer system components. They believe in their products and back them up with a Lifetime Warranty. SOLGW weapons are meant to be used hard and go in harm’s way, they won’t let you down.


Additional information

Weight 36 oz
Dimensions 18 × 4 × 4 in
Roll Mark

Angry Patriot, Loyal 9, Rebellious Stripes


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