Product Overview
Restore or complete your 81mm mortar system with our newly manufactured 81mm M29A1 Mortar Cup (Receiver). This receiver is precision CNC-machined from 4041 steel and protected by a durable manganese parkerized finish.
Manufactured to military specifications, this receiver is made for proper fit, strength, and long service life. It is suitable for restoration projects, historically accurate builds, and compatible live-fire mortar systems.
Historical Significance
The U.S. M29 81mm Mortar entered service during the early 1950s as a successor to the earlier M1 mortar. The M1 traced its design lineage to the French Brandt Mle 27/31, which influenced many Western 81mm mortar systems.
The M29 refined this proven design for Cold War-era infantry service. It improved portability and handling while preserving the performance that made the 81mm mortar an important source of infantry indirect-fire support.
The M29 served during the Korean War, Vietnam War, and later Cold War period. Its reliability, sustained-fire capability, and ease of maintenance made it an important U.S. military mortar system.
The M29A1 incorporated refinements intended to improve durability and service life. The mortar cup serves as the receiver, houses the firing-pin assembly, and connects with the compatible barrel. Proper materials, machining tolerances, and surface treatment are essential to its service life.
Precision Manufacturing and Materials
This M29A1 mortar cup is CNC-machined from 4041 steel, selected for its strength, toughness, and resistance to fatigue. Each receiver is manufactured to military specifications for proper compatibility with M29A1 components.
A manganese parkerized finish provides corrosion resistance and surface durability. Its matte, non-reflective appearance is consistent with the traditional finish used on original U.S. military mortar components.
Key Features
- Model: M29A1 Mortar Cup / Receiver
- Caliber: 81mm
- Material: CNC-machined 4041 steel
- Finish: Manganese parkerization
- Manufacturing Standard: Military-specification tolerances and construction
- Application: Restoration or replacement component for compatible mortar systems
- Firing Pin: Sold separately
Important Notice
This M29A1 Mortar Cup is the firearm receiver and must be shipped to an FFL licensee in the buyer’s state. It is not sold as a registered destructive device. The receiver transfers as a standard Title 1 firearm receiver through the receiving dealer using ATF Form 4473 and any other required procedures.
If a compatible barrel has also been purchased, the barrel will not be shipped until we receive a copy of the buyer’s approved ATF Form 1 or other applicable registration documentation.
After receiving the receiver, the buyer must submit ATF Form 1, Application to Make and Register a Firearm, and receive approval before assembling the receiver with a compatible 81mm barrel as a destructive device.
Do not possess or control a compatible 81mm receiver and barrel at the same time unless the resulting mortar is properly registered or you are otherwise appropriately licensed under federal law.
All federal, state, and local laws apply. The buyer is responsible for confirming that the receiver and completed mortar are legal to purchase, possess, assemble, and use in the buyer’s location.
See our Terms and Conditions for additional information.
Why Choose This M29A1 Mortar Cup?
Whether you are restoring an original U.S. M29 mortar, replacing a worn receiver, or building a historically accurate live-fire system, this newly manufactured M29A1 mortar cup provides a balance of authenticity, strength, and modern manufacturing precision.
Built to military specifications and protected by the proper parkerized finish, it is a dependable core component for a compatible 81mm mortar project.
Product Images
Pictures are stock images of our inventory. Unless otherwise noted, you will not receive the exact item shown. The pictures represent the item’s general condition. The item you receive may be in slightly better or worse condition than the example shown.
