ATLAS Rev. 6 AR15 A1 Upper Receiver for Rimfire

thingiverse

Here is the rewritten text: A High-Performance AR15A1 Upper Receiver Optimized for 3D Printing. Redesigned from: https://grabcad.com/library/lts-atlas-rev-4-thick-upper-rerceiver-short-ejection-port-1\r\n\r\nTwo Custom Versions Available: A Standard Ejection Port Model and a Strengthened Half-Port Design.\r\n\r\nKey Modifications:\r\n\r\n Removed Unnecessary Features: Brass Deflector, Charging Handle Closure, Left-Side Hump, Text Below Ejection Port, Bolt Cam Clearance and Hump.\r\n\r\nNew Additions: A1 Carry Handle, Reinforced Ejection Port Cover Mount, Strengthened Gas Tube Port.