For a long time, we've had customers asking about shipping small parts cheaply. And it's a no brainer: You need one little flat spring, or maybe just an o-ring or stripped screw, but it doesn't make sense to pay to ship that tiny part by itself.
Let me interject here: It never makes sense to order only one thing. ALWAYS order two things. It just makes good sense.
Having said that, we recently enabled First-Class Mail as a shipping option for small parts and small orders. This means you can select cheap AND fast shipping. Previously, you'd have to step up to Priority Mail, which is great if you need a handful of parts, or other smallish items. However, First Class did not used to include tracking services, which we require to ship stuff to you. (Wouldn't want your order to get lost, seriously).
Now, however, we are offering First Class Mail with tracking as an option on our site! If you're ordering repair parts, small accessories, and especially Milspec Monkey patches, these items can ship for as low as $4, making as-you-need-them orders that much easier.
Check it out, and if you need any KWA LM4 Parts, KWA GBB Pistol parts, or ANYTHING else we can ship first class, hopefully it'll come in handy.