Originally Posted by
Dave Hoback
Your’s is a 2nd Gen. Short Action with Staggered Feed mag box. The measurement is actually 4.275” between Action screws. Typically going to a standard magazine like the AICS, requires eliminating the attached mag box and machining the back of the mag well of the Action slightly. But I don’t know off hand if any Bottom metals are produced for the 2nd Gen SA. I know some of the Chassis support either the 4.400” or the 4.275” with a cam style keeper/screw assembly. The MDT TAC21 Chassis I had was like that & would fit either.
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