The PSA M4A1 lower receiver — rollmarked "PROPERTY OF US GOVERNMENT" and "CAL. 5.56MM M4A1" — is the foundation of any serious M4A1 clone build. Manufactured by Palmetto State Armory on forged 7075-T6 aluminum, this stripped lower captures the rollmark aesthetic of issued SOCOM rifles without the expense of a Colt CAGE-coded receiver.
The markings are laser-engraved in the correct font and placement to replicate the Colt M4A1 Block II pattern used by US military units. Machining is MIL-SPEC, with proper fit for standard AR-15/M4 lower parts kits, buffer tubes, and upper receivers. Type III hardcoat anodizing in matte black provides the authentic service finish.
Ideal for clone builders pursuing an FBI HRT M4A1, CAG, or DEVGRU Block II aesthetic on a realistic budget. Pair it with a Colt SOCOM profile barrel, Geissele rail, and issued-pattern stock to complete the look. Ships stripped and ready for your LPK and build sequence.
Please note: rollmarks are for clone/display accuracy only. This is a commercial firearm sold to civilians.
Order yours today and lay down the correct foundation for your M4A1 clone.
THIS IS A SERIALIZED FIREARM. It must ship to a Federal Firearms License holder. No civilian exceptions.
Buying and shipping through Charlie’s is easy, but there is some information you need to know. Only a federally licensed firearms dealer may receive a firearm or federally regulated serialized item (like a receiver or suppressor). We cannot ship these items directly to you. Please follow these steps to process your transaction:
1) Check your state laws to make sure the federally regulated item you want to purchase is legal in your state. Your FFL dealer should be able to give you all of the necessary information regarding your state specific laws. But, if we ship to your FFL, and there is a legal issue, we cannot accept a return. So please make sure that you know and follow your local and state laws.
2) A quick google search will show you what Federal Firearms Licensed (FFL) dealers are in your area. When you are ready to purchase, contact the FFL dealer you would like to use and get their shipping address. During the check-out, put YOUR address in the “billing” section and the FFL DEALER’S address in the “shipping” section. If you don’t know your FFLs address, that’s okay. You can send the information later.
3) After check out, make sure to contact your FFL dealer to ensure they will receive your shipment for you (most do this for a small fee, but you should always double check).
4) Have your dealer send us a copy of their FFL to FFL@CharliesCustomClones.com. Charlie’s does not reach to your FFL (MAKE THEM EARN THEIR FEE!!!)
5) Be patient! In order to ensure we remain compliant with all federal laws, our compliance department is kept separate from our sales and operations team. Please allow a few days for our compliance officer to verify all of your dealer’s documents and ensure all federal laws are being observed. You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.
That’s it! We try to make this process as simple as possible for our customers, but if you are unfamiliar the process or have any other questions, please visit our How to Buy a Firearm page for more details.
California and New York residents please, click here. The process may be different due to state specific laws.
NOTE: The free shipping option does not apply to full rifles, unless purchased with a riflescope. If you choose free shipping at check-out, we will bill you for shipping later.
Palmetto State Armory
Palmetto State Armory
Palmetto State Armory
Colt