GM AR15 COMPLETE UPPER RECEIVERS
Gorilla Machining offers a huge selection of AR-15 upper receiver parts. If you're building a new AR-15 or upgrading or replacing some old parts we have plenty of options to choose from such as accessories, barrels, barrel assemblies, bolt carrier groups, charging handles, gas blocks, handguards, rails, conversion kits, muzzles, grips, sights, & much more.
- GORILLA MACHINING AAC AR15 300 BLK OUT UPPER RECEIVER
- GORILLA MACHINING LUGER AR15 9MM UPPER RECEIVER
- GORILLA MACHINING MARKSMAN AR15 5.56/.223 UPPER RECEIVER
- GORILLA MACHINING MIKHAIL AR15 7.62X39 UPPER RECEIVER