SKU: WEHWM304MC
MPN: WM304MC
The Spring Cup Mid Height 4in Tall is a precision-engineered modular component designed for shooters who demand repeatable, secure weapon system assembly. Built to exacting standards by WEHRS MACHINE, this mid-height cup serves as a critical interface in AR-platform configurations, providing the structural foundation necessary for consistent barrel extension engagement. Whether you're running a duty rifle, precision build, or competition platform, this component bridges the gap between reliability and performance in demanding operational environments.
Engineered to precise tolerances, the Spring Cup Mid Height 4in Tall leverages spring-loaded retention mechanics to ensure zero drift under recoil and sustained fire. Its compact footprint and lightweight construction minimize added mass while maximizing functionality, a critical consideration in platforms where every ounce impacts handling and maneuverability. The design eliminates common failure modes associated with loose or poorly seated assemblies, delivering the consistency law enforcement and military end-users require.
Operators rebuilding complete uppers, gunsmiths conducting maintenance, and armament specialists will find this cup essential for proper barrel extension installation. It is compatible with AR-15 and AR-10 platforms that utilize mil-spec receiver extensions, making it a versatile choice for various builds. This product is particularly beneficial for those who prioritize reliability and performance in their firearm configurations.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.