The HiStory

M16A4 - rEPLICA

Model 901

“Rifle, Caliber 5.56 mm, M16" adapted from the ArmaLite AR-15, initially developed in 1956.

Caliber - 5.56x45 NATO / .223 Remington

Overall Length - 39.5 Inches / 100.3cm

Weight - 10 LBS / 4.53 Kg

Notes: Loaded - 30 Round Magazine, Sling & In-Stock Cleaning Kit

Parts Specifications:

Barrel

M16A2 Barrel Assembly

Length - 20 Inch

Profile - Government

1:7 Rifling Twist

Rifle Barrel Extension

Manufacturer - Palmetto State Armory

Notes: Chrome bore; 1/2x28 Thread

Muzzle Device‍

A2 Compensator

Manufacturer - Palmetto State Armory

Notes: 5.56; 1/2x28 Thread

Gas Tube‍

Rifle Length Gas Tube

‍Manufacturer - Palmetto State Armory

Upper Receiver‍

M16A4 Complete Upper Receiver‍

Rifle Feed Ramps

‍Manufacturer - Palmetto State Armory

Charging Handle

Milspec AR-15 Charging Handle

‍Manufacturer - Palmetto State Armory

Bolt Carrier Group

5.56 Phosphate MPI Full-Auto Bolt Carrier Group

Manufacturer - Toolcraft

Notes: Chrome Lined Gas Key; Hardened to USGI Specifications

Handguard

M5 RAS Handguard

Manufacturer - Knight’s Armament Company

Lower Receiver‍

Stealth Lower Receiver

Manufacturer - Palmetto State Armory

Notes: A2 Profile

Fire Control Group

ARC Fire 3-Position Fire Control Group

Manufacturer - AS Designs

Notes: Safe, Semi-Auto, Full Semi-Auto

Lower Parts Kit

AR-15 Lower Parts Kit

Manufacturer - Palmetto State Armory

Receiver Extension

5.56 Rifle Length Buffer Tube

Rifle Length Buffer Spring

Rifle Length Buffer

Manufacturer - Palmetto State Armory

Notes: Buffer Weight: 5.1 oz

Pistol Grip‍

A2 Grip

Manufacturer - Palmetto State Armory

Stock‍

A2 Length Stock

Manufacturer - Palmetto State Armory

Notes: Type E Trapdoor

Stock Screw

A2 Length Stock Screw & Spacer

Manufacturer - Palmetto State Armory

Magazine

USGI Style 30-Round Magazine

Manufacturer - Brownells

Attachments / Accessories

Butt Stock Cleaning Kit

USGI Surplus

Manufacturer - DevilDogDepot

Sling

USGI Sling

Foregrip

Broomstick Foregrip

Manufacturer - Knight’s Armament Company

Rail Cover

Various Legnth Rail Covers

Manufacturer - Knight's Armament Company

Tools Used / Recommended Tools

Bench Vice

Notes: Needed for holding receivers in place during assembly.

Upper Receiver Rod

Notes: Keeps barrel secure while torquing barrel nut(very important), installing muzzle devices and keeps upper receiver stable while installing sights/optics.

Handguard Tool

Notes: Makes install & removal of handguards far easier on rifles with Slip & Delta rings.

Lower Receiver Vise Block

AR-15 Armorer's Wrench

Notes: Needed for barrel nut and buffer tube installs, helps with muzzle devices that are compatible.

Torque Wrench

Notes: Needed for installation of barrel nut.

Pin Starter Punch Set

Notes: Helps with installing trickier roll pins such as bolt catch or trigger guard.

Pin Punch Set

Center Punch Set

Notes: Needed for staking endplates / castle nuts on carbine buffer tubes.

Takedown Pin Install Tool

Notes: Greatly decreases the difficulty of installing front takedown pins without losing detents / springs.

3/16" Hex T-Handle Wrench

Notes: Allows easy access for removal & installation of pistol grips ensuring proper torque for installation.

Snap Ring Pliers

Notes: Needed for indexing snap ring that holds Slip / Delta ring while installing gas tube into upper receiver on milspec barrel nuts.

5.56 NATO Headspace Gauges

Notes: Used for ensuring proper chamber headspace between your bolt and barrel.

A list of parts and tools used can be found below. For those who want to build their own M16A4.