pneumatic rivet nut gun for sale | eBay- astro pneumatic rivet nut gun ,ASTRO PNEUMATIC 3/8 and 1/2" Pneumatic Rivet Nut Setting Gun AOPRN12. Brand New. $307.20. FAST 'N FREE. Buy It Now. Guaranteed by Wed, Aug. 5. Free shipping. Watch. SP.[Astro Pneumatic 0745000000000] Rivet Nut Setting GunASTRO PNEUMATIC 3/8 and 1/2 rivet nut setting gun AOPRN12 features benefits: the prn12 onyx with mandrels allows user to dial in regulator settings for specific sizes compositions We will not issue a refund for any product which is returned to us that has been used or altered, parts missing, had unauthorized repair attempts, subjected misuse, abuse, modification, negligence accident.