Standard Composition of all Tactilite Uppers:
- Upper Receiver with integrated MIL-STD-1913 scope rail
- Material: 4140 chome-moly HRA steel
- Heat-treating: Quench & temper to 42-45 Rockwell C (equal to an ax)
- CNC-machined on 5-axis machining center
- Finish: Parkerized (base finish) and "graphite black" CeraKote (top finish)
- Bolt
- Two-lug design
- Push-feed mechanism
- Plunger ejector
- Machined extractor
- Material: 4340 alloy steel
- Heat-treating: Quench & temper to 42-45 Rockwell C
- CNC-machined on Integrex turning center
- Finish: Parkerized
- Barrels
- Full free floating
- More details, see chart below
- Handguard
- Material: 7075 Aluminum
- MIL-STD-1913 quad-rail
- CNC-machined on 5-axis machining center
- Finish: "graphite black" CeraKote (top finish)
- Firing Pin
- Spring-loaded, free-floating
- Material: Pre-heat treated 4142 steel
- Machined with CNC-Swiss turning center
- Finish: Parkerized
- Bolt handle
- Bell-shaped handle
- Material: ETD 150
- Thread: 7/16-18
- 60 deg. cone
- Finish: Parkerized (base finish) and "graphite black" CeraKote (top finish)
- Miscellaneous:
- Muzzle brake: CNC-machined from 12L14
- Bolt Tube: CNC-machined from 4130 tubing
- Heavy Duty Hammer: CNC-machined from 1018 steel, hardened to 42 Rockwell C
- Tabulated Data
