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M4 PATROLMAN'S™ Builder Kit

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SKU: 00-60001-PRO

Why we made M4 PATROLMAN'S™ Builder Kit

The M4 Patrolman's™ rifle series is the core of the Bushmaster® Firearms lineup. This rifle is the hard-use duty rifle that Bushmaster® is best known for. Handcrafted in America and Proven® to perfection, the M4 Patrolman’s™ series is your go-to for duty, recreation, and sport shooting.


- Caliber: 5.56 NATO (.223 REM)

- Barrel Length: 16”

- Barrel Material: 4150 CMV

- Barrel Finish: Salt Bath Nitride

- Barrel Thread Pitch: ½” x 28

- Twist Rate: 1:7

- Weight: 4.6 LBS

- F-Marked A2 Front Sight


- Carbine-Length Gas System

- 7075 Forged A4 Flat Top Upper Receiver

- A2 Flash Hider

- Mil-Spec Charging Handle

- Complete BCG

- Bolt Carrier 8620 Steel SBN

- Bolt 9310 MPI SBN

This kit includes:

- Hammer

- Hammer Spring

- Trigger

- Trigger Spring

- Hammer & Trigger Pivot Pins (2)

- Disconnector

- Disconnector Spring

- Bolt Catch

- Bolt Catch Plunger

- Pivot Pin

- Buffer Retainer

- Buffer Retainer Spring

- Magazine Catch Button

- Magazine Catch Spring

- Magazine Catch

- Take Down Pin

- Selector

- Selector Detent

- Selector Detent Spring

- Trigger Guard

- Trigger Guard Roll Pin

- Takedown Detent Pin (2)

- Takedown Detent Spring (2)

- Grip Screw

- Grip Washer

- Pistol Grip

- 6 Position Mil-Spec Buffer Tube

- Receiver End Plate

- Castle Nut

- Carbine Buffer

- Buffer Spring

- M4 Carbine Stock

Proudly Made in U.S.A.

Important Information

Firearms Shipments:
According to federal regulations, firearms can only be shipped to a licensed dealer. To avoid any delays in delivery, kindly ensure that your FFL (Federal Firearms License) dealer sends us a copy of their license, along with your name and order number via email. In case you don't have your FFL with you, we will get in touch with your dealer to obtain a copy. Once we receive the FFL, we will begin processing your order, and the lead time will start from that point. Please feel free to reach out to us at FFL@bushmaster.com if you have any queries or concerns regarding this proces.

Lower Receivers Shipments:
Lower receivers are also considered firearms under federal regulations and require an FFL (Federal Firearms License) prior to shipment. Therefore, it is important to ensure that your FFL dealer sends us a copy of their license, along with your name and order number via email. We appreciate your attention to this matter as it helps us ensure a smooth and timely delivery of your order. If you have any questions or concerns about this process, please do not hesitate to contact us at FFL@bushmaster.com

Magazines Shipments:
The magazine capacity of the firearm will depend on the jurisdictional restrictions of your state of residence. We want to ensure you receive a product that complies with your state's regulations.

Shipping to Alaska or Hawaii:
If you're shipping to Alaska or Hawaii, please be aware that there may be additional shipping charges. If applicable, we will contact you at the time of shipment to discuss additional costs. As always, your satisfaction is our top priority.

Important Information:
Warning: This product can expose you to chemicals, including lead, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to - https://www.P65Warnings.ca.gov

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