MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, mil-s-6758, 4130, cond. C4; steel, qq-s-681, class 150-125, except carbon 0.43% max., manganese 0.90% max., sulphur 0.05% max., phosphorous 0.03% max.; 8.690 in. Lg.; 7.660 in. W.; 3.124 in. Ht.; heat treatment: wrought material = heat at 1575-1625 deg. F., oil quench, temper to rockwell hardness c30-c36; heat treatment: cast material = normalize, austenize, oil quench and temper to rockwell hardness c30-c36; enamelper tt-e-527, olive drab
