[Buying] Wingman -- honest traders only

Looking for a Wingman (Pistol (Sniper Ammo)). I've got gear and mats to barter -- tell me what you actually want instead of 'best offer'. Honest traders only, I've read enough horror stories this week.

In. I've got spares to put toward this -- reply and we'll line it up.

Would a stack of mats plus something spare be fair for this? Still learning what things are worth.