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These are the How-To instructions for the Polymer80 jig and lower systems.
Select the instructions based on the version of the product you own. Please note that while the videos are very informative, you will need to download and read the PDF instructions. The videos do not contain the sizing info that is required to properly mill out the lower receiver. We urge you to use the videos as a secondary visual guide after reading the instructions.
G100 (legacy product)
G150 - Phoenix versions 1 and 2 (Use for RL556v3™)
RJ556U Universal Jig for Milspec 80% AR-15 Lower Receivers
.308 WarrHogg Lower Receiver:
PF940V1.5 80% Pistol Frame:
PF-Series™ 80% Pistol Frames:
Tips, Tricks and Techniques
How to Build AR15s: Several great links and articles are included below to get you started. Choose which article fits your learning style. These articles also can be utilized for the .308 WarrHogg rifle build as well.
Please note some key differences on our G150 lower receiver as you read through the articles. When they discuss the bolt catch assembly, our system uses a stainless steel dowel pin and set screw rather than the roll pin that comes with most lower parts kits. Just ignore these sections that don't apply. Install the spring, bolt catch plunger, and bolt catch using our stainless dowel pin to hold the bolt catch in place. Finally, install the small black set screw to secure the dowel pin. A moderate amount of force is required to start threading the set screw. Our lower receivers also use a square nut and screw to install the pistol grip rather than the screw and washer provided in most lower parts kits.
|Brownells Videos: How to assemble an AR15
(The most applicable sections are Upper and Lower Receiver
installs, Handguard and Muzzle Break installation)
|TheNewRifleMan.com Article: How to Build an AR15
(Lots of detailed pictures in this one)