- Trigger upgrades
- Handguard change / free floating
- Muzzle device change out
- Stock replacement
- Pistol grip swap
- Ambidextrous safety installed
- Single point stock plates installed
- Oversized trigger guard
- Optics mounting and bore-sighting
- Fore-grips installed
- Armorer cleaning
- A2 front sight assembly removal
- Piston conversion
- Adjustable gas blocks
- Re-barrel or barrel swap
- Spring set replacement
- Fixed to collapsable stock conversion
- Flashlight / laser mounting solutions
- Range zeroing
