WTS 4-5 used Surefire M73 carbine rail systems. Used take offs from PD weapons. Most have ladder covers on them. Includes a KAC or tango down foregrip.

Rail & Grip: $85ea obo

will consider trades:
Ultimak AK rail system or gas rail
mid-length uppers or rail systems
SCAR-17s mags, SCAR H AAC flash supressor
9mm/.40 glock or M&P stuff
New D&H teflon Ar15 magazines, Emags
Surefire Executive/Defender LED lights, x300
Weapons cases rectangular

Quality optics:
H-1, T-1, CompC, M2, M3, Trijicon, etc. Maybe a Vari-X something

Ammo
9mm, .40, .45, 5.56, 7.62x39, 7.62NATO