This is a laser sight for the side rails of Xshot gel blasters, for mine specifically, the xshot hyper gel blaster.

Uses a 5 watt green/red laser which can be found here: https://www.amazon.com/gp/aw/d/B0BVHLF8W4/?_encoding=UTF8&pd_rd_plhdr=t&aaxitk=d620b5580ee76080855674e022e2cc52&hsa_cr_id=0&qid=1771204887&sr=1-1-bb1dd90d-43d9-4889-9fa3-06ff69afcca4&ref_=sbx__sbtcd2_asin_0_img&pd_rd_w=qetuQ&content-id=amzn1.sym.82d1f27a-7c65-4ec8-bbd1-2324e26de12f%3Aamzn1.sym.82d1f27a-7c65-4ec8-bbd1-2324e26de12f&pf_rd_p=82d1f27a-7c65-4ec8-bbd1-2324e26de12f&pf_rd_r=T95M3XJBWDR5YDAP3JDS&pd_rd_wg=ovwuR&pd_rd_r=eaaf7ba5-ac96-4a15-a82d-9e3cf8301acb&th=1 

however, hole diameter is 0.79 inches (or around 20mm) meaning it can possibly fit anything else around that size.

this is my very first 3d file upload, so please give me any feedback if possible!! <3