Xueliee Stainless Steel Slingshot Release Device Polishing DIY Catapult Rifle Trigger

I ordered this device for a simple project: it failed to turn up first time, and I initiated the refund process. Then the vendor contacted me, and asked to be given a second chance. Which I agreed to.The item arrived today, in a simple padded bubble-wrap surround. The inner zip-lock bag had been pierced by one of the supplied bolts, which promptly fell out on opening the outer wrapping.A piece count revealed the successful delivery of the trigger thing itself, 4 long bolts, 4 short bolts - but only two nuts.No "big" thing, but it's a shame the vendor didn't package this properly.Looks like it's gonna work for my project, once I've found two stainless steel nuts of the right size!! Hence only 4 out of 5.