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Made from 7075-T6 aircraft-grade CNC-machined aluminum
Material: ERGAL (7075 Aluminum Alloy)
1x Mancraft CNC AR15 Lower Receiver
Perfect for high-volume shooters looking to save time and eliminate the hassle of manual loading
Compatible with most M4 / AR15 AEGs
RetroArms CNC Hop Up Chamber AR15 ULTRA Shim Sets Made from 7075-T6 aircraft-grade CNC-machinedBuilt for uncompromising accuracy and premium performance, the RetroArms CNC Hop Up Chamber AR15 ULTRA is a high end upgrade made from durable aircraft grade aluminum (EN AW 7075 T6). Designed specifically for AR15 M4 AEG platforms, the ULTRA version features enhanced geometry and improved contact points to deliver optimal hop up consistency and air seal, especially for precision builds. Features: CNC machined from EN AW 7075 T6 aircraft aluminum