The image on the bottom right shows two 10/22 carbines, the top one in issued form (with a 4-power magnification scope added, using the factory supplied scope base) and the bottom one in highly modified form.
 The modified target version includes an 18 inch bull barrel, a muzzle brake, a laminated wood silhouette style stock, and a scope with an illuminated reticle, in addition to internal modifications of the trigger group to improve the firing characteristics.
 See the entry on accurizing for more information on the reasons for these modifications.

A wide variety of aftermarket modification kits are offered for the 10/22, including conversions to bullpup configuration and cosmetic alterations to replicate the appearance of weapons like the M1 Carbine, Thompson submachine gun, FN P90, and AR-15.
The image on the bottom right shows two 10/22 carbines, the top one in issued form (with a 4-power magnification scope added, using the factory supplied scope base) and the bottom one in highly modified form.  The modified target version includes an 18 inch bull barrel, a muzzle brake, a laminated wood silhouette style stock, and a scope with an illuminated reticle, in addition to internal modifications of the trigger group to improve the firing characteristics.  See the entry on accurizing for more information on the reasons for these modifications.
A wide variety of aftermarket modification kits are offered for the 10/22, including conversions to bullpup configuration and cosmetic alterations to replicate the appearance of weapons like the M1 Carbine, Thompson submachine gun, FN P90, and AR-15.
Ruger 10/22