A genuine Colt M4 Carbine lower is already the right foundation for a serious M4-family clone. This version goes one step further with a serial-matched UID tag, adding the military inventory-control detail normally missing from commercial Colt lowers. You get the Colt pony, M4 CARBINE / CAL. 5.56 MM markings, CR-series serial, Colt internals and recoil system, plus a UID matched to the individual receiver. On an expensive clone, small details are often what separate “close” from convincing.
The UID is more than a decorative square. DoD Item Unique Identification uses machine-readable marking to associate serialized equipment with identifying data for accountability and lifecycle tracking. On this lower, Charlie’s matches the UID to the receiver serial number, making the tag specific to that Colt lower rather than simply cosmetic.
One detail deserves explanation. The photographed UID carries CAGE 13629 and part number 12972700. U.S. Army documentation identifies 12972700 as the weapon-level part number for the M4A1 Carbine; the M4 is separately identified as part number 9390000. The receiver itself remains a commercial Colt M4 CARBINE-marked lower and is not represented as a U.S. Government-property M4A1 receiver.
That distinction is why this configuration is interesting. It delivers a genuine Colt M4 lower with the visual language of the military UID system, without stepping up to the scarcer “PROPERTY OF U.S. GOVT” M4A1 lower.
These are Colt factory rifle take-offs, not virgin receivers. Colt assembled and test-fired the donor rifle before the lower was separated. The lower includes Colt fire-control and lower parts, carbine receiver extension, heavy/H1 buffer and carbine spring. The stock is omitted so you can finish the clone with the correct furniture instead of paying for a stock you would replace anyway.
| Manufacturer | Colt |
| Type | Complete M4-pattern lower receiver |
| Receiver Marking | M4 CARBINE / CAL. 5.56 MM |
| Serial Series | CR |
| Receiver Material | 7075 forged aluminum |
| Finish | Black anodized |
| Fire Control | Colt semi-automatic trigger group |
| UID CAGE | 13629 |
| UID Part Number | 12972700 |
| UID Serial | Matched to receiver serial number |
| Receiver Extension | Colt 4-position carbine |
| Buffer | Colt heavy / H1 |
| Action Spring | Carbine |
| Pistol Grip | Colt A2-pattern |
| Stock | Not included |
| Receiver Origin | Colt factory rifle take-off; factory test-fired |
| Virgin Lower | No — rifle-origin receiver |
| Transfer | Serialized firearm; FFL required |
| Manufacturer Part Number | Not separately published for this configuration |
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.
