- LWRC
- Surefire
- Magpul
- Knights Armament
- Insight (Also hoping for Class 1 PEQ-15)
- Aimpoint
- Trijicon
- Sig
- TNVC
- Daniel Defense
- Laser Devices
- BCM
- Crimson Trace (IR Grips)
- LaRue
- HK
- FN (SCAR stuff)
- Adams Indsutries
- Remington (RGP)