![]() 223 Remington shot from five-round box magazines while the others shot from four-round magazines. Magazine capacities vary depending on the cartridge used, with the. 22-250 Remington, and the 6.5mm Creedmoor. 308 Winchester (used by most of the M77 Hawkeye and Gunsite Scout lines). The M77 Mark II fires a range of smaller calibre cartridges, from Ruger's own. ![]() Likewise, the integral scope mounts, cut into the rear of the receiver, remain as does the one-piece stainless steel bolt handle. The Mauser-style extractor system (which had originated on the Mauser 98) was slightly modified for a better ejection performance but remains virtually identical to the original. However, a significant number of design elements from the original design have remained. The original trigger has also been replaced, with a two-stage trigger designed to remove large amounts of movement and weight in the trigger to make firing easier. ![]() The original two-tang safety has been replaced by a three-position mechanism which allows the chamber to be loaded and unloaded while the bolt can move (as well as locking it in position to prevent it moving all together). The major changes to the M77 that were made to create the M77 Mark II were to the safety, trigger and bolt.
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