Magpul mbus rear sight, gen 2.
Trade value $40, $35 cash.
May trade for detachable carry handle with split A / cardinal forge / cerro keyhole / square forge mark, b5 p23 fde / black car ls2 grip, ddc zilch or rearden hub adapter, b5 or bcm fde vfg, bcm / solgw / alg act / colt trigger, preban / retro ar parts, teardrop forward assist, stripped upper. Email [email protected] if interested.