Phoenix Colt Style Moderators

The History of the Colt Moderator:

Since the length of the 607 is pretty short, similar to today’s Short-Barreled Rifles, it needed something to tame down the incredible noise, muzzle flash, and rise when firing full-auto. To maintain a short length and compact size, a 3.5-inch Moderator was added. Later on, when the XM177 was developed, it came with a 4.5-inch Moderator that has a built-in flash hider on the end. Some historians suggest that the idea of the Moderator was an attempt at making a Short-Barreled Rifle sound more like a standard length Carbine. 

The Colt Model 607 was the first attempt to produce a "True Carbine" which had both a reduced barrel length and collapsing buttstock. The 607 Models included; the 607 with 3-Way Fire Control Group(Safe, Semi, Auto), the 607A with 3-Way Fire Control Group (Safe, Semi, Auto) the 607B with 3-Way Fire Control Group (Safe, Semi, Burst). The model 607 used modified AR15/M16 furniture to include a modified buttstock which allowed it to be extended or collapsed, as well as a shortened pistol grip and shortened triangular handguards.

The Model 607 had very limited production numbers and saw very minimal use in the field by US Military Forces during Vietnam. There was a "Military Version" of the 607 which was given the designation of GX-5857. The exact details on this version are unknown at this time.

Colt Model 607 Upper Variations:

The Colt Model 607 was built using both a Standard Slick Side Upper, and a Standard Forward Assist Upper. The use of these Uppers seems to be relatively equal in numbers.

Colt Model 607 - Flash Hider Variations

The Colt Model 607 was most commonly found with a 3.5" Moderator, however it could have also been found with a 3 Prong Flash Hider and 4.5" Moderator.

Today, Phoenix Weaponry has re-created these Moderators for anyone that has a 607 or XM177. Machined from 4130 U.S.A. made billet steel and black oxide coated, these Moderators from Phoenix Weaponry not only look the part they perform excellent too. There are a few upgrades that have been done to these types of suppressors. First, the operator will notice that Phoenix Weaponry has designed these with threaded end caps so they can be disassembled for maintenance, whereas the original moderators were welded shut. Next, the Moderators core design has been upgraded with more porting and larger grooves to achieve more sound suppression.

• Precision CNC machined 4130 core, end caps and outer shells.
• All parts are Coated in Black oxide.
• 1⁄2-28 thread 1.0” outside diameter x 3.5”overall length, weight 6.5oz