Over the years, many students have inquired about doing an Appleseed Rifle Clinic and how to get started with possible modifications to their 10/22. In addition to a loop sling and possibly some trigger work, below is a list of links where some of us obtained other helpful accessories.
1) Scope rail- EGW model 46100 http://www.midwayusa.com/product/263151/egw-1-piece-picatinny-style-base-ruger-10-22-matte
2) Scope BSA Sweet .22 3-9x40mm http://www.amazon.com/BSA-Sweet-3-9x40mm-Rifle-Scope/dp/B000NJUPAS
3) Extended mag release- PWS T3 Lever http://www.primaryarms.com/PWS_T3_10_22_Magazine_Release_Lever_p/4t3mrlb1.htm
4) Bolt Lock Back- Volquartsen Automatic Bolt Release Ruger 10/22 http://www.midwayusa.com/product/928688102/volquartsen-automatic-bolt-release-ruger-10-22
or http://www.amazon.com/Volquartsen-Custom-Automatic-Release-Black/dp/B0029M0U66/ref=sr_1_2?ie=UTF8&qid=1441671614&sr=8-2&keywords=ruger+10+22
1) Scope rail- EGW model 46100 http://www.midwayusa.com/product/263151/egw-1-piece-picatinny-style-base-ruger-10-22-matte
2) Scope BSA Sweet .22 3-9x40mm http://www.amazon.com/BSA-Sweet-3-9x40mm-Rifle-Scope/dp/B000NJUPAS
3) Extended mag release- PWS T3 Lever http://www.primaryarms.com/PWS_T3_10_22_Magazine_Release_Lever_p/4t3mrlb1.htm
4) Bolt Lock Back- Volquartsen Automatic Bolt Release Ruger 10/22 http://www.midwayusa.com/product/928688102/volquartsen-automatic-bolt-release-ruger-10-22
or http://www.amazon.com/Volquartsen-Custom-Automatic-Release-Black/dp/B0029M0U66/ref=sr_1_2?ie=UTF8&qid=1441671614&sr=8-2&keywords=ruger+10+22