Bushmaster ACR Caliber Conversion System Comes to Market

by
posted on October 11, 2018
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
finalacr-beauty-shot-1.jpg

After eight years of anticipation, the Bushmaster Unicorn, also known as the ACR caliber conversion, has finally hit the market. This caliber conversion system for the ACR, a platform that offers fully ambidextrous controls, improved ergonomics, an ultra reliable gas -piston operating system, and tool-less configuration and caliber adaptability, is promised to be the first of many caliber options. For now however, these conversions will be offered in .450 Bushmaster, and 6.8 Rem. SPC II. For a complete list of the options now available, please see the chart below:

Product Specifications

Product

Order #

Barrel

Magazine Capacity

2018 MSRP

16” .450 Bushmaster ACR Conversion

90023

16” FNC Treated 4150 CMV, 1:24”
twist

5 Round Polymer

$699

18.5” .450 Bushmaster ACR Conversion

90024

18.5” FNC Treated 4150 CMV, 1:24” twist

5 Round Polymer

$699

16” 6.8 Rem. SPC II ACR Conversion

90028

16” FNC Treated 4150 CMV, 1:11” twist

25 Round

$699

 

Latest

Weatherby 307 MZY 01
Weatherby 307 MZY 01

Weatherby Goes Black Powder: The Model 307 MZY

As Weatherby's first entry into the muzzleloading category, the Model 307 MZY promises to “deliver a new standard of accuracy, reliability, and consistency for black powder hunters.”

First Look: Federal’s X Henry 250th Collection

Federal has officially begun shipping its Federal X Henry Collector’s Edition ammunition, created in partnership with Henry Repeating Arms.

An Independence Day Celebration of the Armed Citizen

Independence Day is a celebration of armed defiance to tyranny—and of the citizen’s right to defend their lives.

When Minutes Counted: The 1776 Battle of Moores Creek Bridge

Shortly before the Declaration of Independence was signed, a small but pivotal battle took place near the port city of Wilmington, N.C. The February 27, 1776, Battle of Moores Creek Bridge was the first Revolutionary War battle to be fought in the Old North State.

I Carry: Kimber 1911 DS Warrior in a PHLster Floodlight 2 Holster

In our latest "I Carry" video, we take a closer look at Kimber's latest double-stack, 2011-style handgun, the 1911 DS Warrior, and pair it with a SureFire X300 Ultra weapon light and a PHLster holster.

The Armed Citizen® July 3, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Interests



Get the best of American Rifleman delivered to your inbox.