Items Available For Purchase Today Star Super B 9mm Firing Pin Spring fits ... $4.00 SELLER: Robertson Trading Post Bastion Slide Back Plate, Molon Labe - f... $19.99 SELLER: Discount Tactical Supply Oversize length Safety Spring for Star P... $6.00 SELLER: Robertson Trading Post Smith & Wesson Ejector or Extractor Star... $16.00 SELLER: Robertson Trading Post Star Super B or model A 9mm .38 ACP Pist... $29.00 SELLER: Robertson Trading Post F.I.E. T-18 Cylinder Pin for Titan .22 R... $16.00 SELLER: Robertson Trading Post Backup Tactical Custom CNC Machined Thre... $29.95 SELLER: Discount Tactical Supply NIB VP9 OR slide with tall sights and sl... $314.99 SELLER: GUNZ N FUN Sig Sauer 34221600 Outer Slide Pin fits ... $9.90 SELLER: Robertson Trading Post Strike Industries SIGSB Shock Buffer Glo... $9.99 SELLER: DEGuns_net GREY GHOST PRECISION GGP365FDE2 GGP365 V... $402.19 SELLER: Discount Tactical Supply NEW AA Arms Front Sight Pin Screw $3.25 SELLER: Flint Armament RI Non Guns Gun Parts Misc Pistols Ruger MKIII Mainspring Assembly Blued Factory New fits MKII MKIII | 1232 | 0 | ?t=&sft=<id=&co=&og=&ong=&to=&lid=&cid=1232&as=&mn=&mx=&f=&ca=&ffl=&oi=&dn=&zipcode=&distance=&limittostate=&pagenum=1&numberperpage=12&sort=&local=&sold=0&sku=&upc=&bl=&gf=&ff=&distributorid=&manufacturer=&model=Lc | 15.576ms See All Ruger MKIII 22/45 Mainspring Assembly Blued - Factory New fits MKII & MKIII For Sale from: Cole369 ( FFL) | Positive feedback: 100% View | | 9 Completed Sales View Sellers Items Ruger MKIII 22/45 Mainspring Assembly Blued - Factory New fits MKII & MKIII For Sale from: Cole369 | Positive feedback: 100% View | | 9 Completed Sales View Sellers Items Cole369 Seller Since: Nov. 2012 Identity Verified ( Valrico, FL ) This seller is an FFL City: Valrico State: FL SOLD - $49.95 Shipping: $2.95 Accepted Payment Methods: Returns: No Returns Description: Factory Ruger MKIII 22/45 Complete Mainspring Assembly “NEW”!! RUGER ITEM# 61114 PART# AP00903-100 MK III-22/45 MAINSPRING HOUSING LATCH ASSEMBLY This is an original factory Ruger MKIII 22/45 Complete Mainspring Assembly. No modifications needed. Works on both Ruger MKII 22/45 and Ruger MKIII 22/45. These mainspring assembly's were removed from a consignment of new Ruger's I'm parting out. **NOTE: IF TRY TO BUY A MAINSPRING FROM RUGER THEY ARE SOLD ON AN EXCHANGE BASIS ONLY. YOU CANNOT PURCHASE ONE OUT-RIGHT** ***NOTE:THESE ARE NOT THE MAINSPRINGS FOR THE STANDARD RUGER MKII & MKIII STEEL FRAMED SERIES*** ***********THESE MAINSPRING IS FOR THE MKII 22/45 & MKIII 22/45 POLYMER FRAME SERIES ONLY!!!! IF YOUR RUGER SAYS "22/45" THIS MAINSPRING FITS IF YOU DO NOT KNOW THE DIFFERENCE, PLEASE ASK BEFORE ORDERING" I also have all new MKIII 22/45 Grip Frames with and without panels, Ruger MKIII Complete Bolt Assembly (Fit MKI, MKII & MKIII), Ruger MKIII 22/45 10rd mags, Ruger Soft Case OEM Carry bags, Ruder OEM Hard-Cases, Ruger OEM cardboard boxes, Ruger OEM Locks, and Ruger MK Series Scope Mounts, Ruger MK Series Owners Manual, Ruger Vinyl Decals, . I also sell New RUGER MKIII 22/45 LITE Threaded Black Anodized Aluminum Barrels, MKIII 22/45 4", 5.5" Bull barrel blued and 4.5" Threaded Bull barrel blued, all complete with receivers on Gunbroker. I also offer custom fitting and barrel fluting, threading and shortening on these barrels. Shipping to 48 Continental States $2.95, each additional mainspring is $1.95 Alaska and Hawaii shipping fee is $3.95 additional mainspring $2.95. SHIPPING TO DOMESTIC U.S. 50 STATES ONLY...NO APO, FPO, PUERTO RICO, OR INTERNATIONAL SALES Condition: New In Box Brand: Ruger Model: 61114 AP00903-100 Item #: 989970430 Stock No.: RPNMKIII2245MNSPRNG Location: FL Trades Accepted: No Share: Shipping Notes: Shipping is USPS 1st class Mail $2.95 additional springs $1.95 Items You've Viewed Recently Ruger MKIII 22/45 Mainspring Assembly Bl... $49.95 SELLER: Cole369 (FFL Dealer) Add To Cart