INA Model 953

Infobox Weapon|is_ranged=yes
name=INA Model 953


caption=
origin=flagcountry|Brazil
type=Sub machine gun
service=1950 - ?
used_by=
wars=
designer=Dansk Industri Syndikat
design_date=1950
manufacturer=Industria National de Armas S.A.
unit_cost=
production_date=
number=
variants=M.B.-50
spec_label=
weight=7.50 Pounds
length=31.26" with stock open
cartridge=
caliber=.45 ACP
barrels=
action=Blowback
rate=650 RPM
velocity=740 FPS
range=
max_range=
feed=Magazine 30 rounds
sights=Single aperature set for 100M

The INA Model 953 is a modified Madsen M/50. It was manufactured by the Industria National de Armas S.A. in São Paulo Brazil under license for Madsen. Production began in 1950. The first Model was marked M.B.-50 and was manufactured till 1953 and was marked with a large Brazilian crest. In late 1953 the Model 1953 was introduced. Improvements on the 1953 model were a larger magazine housing and a metal loop riveted to the lower right side of the magazine housing. The loop could then hold the magazine housing together. Also the retracting handle was changed on the Model 953 to the right side instead of the top as was the buffer spring and the shape of the extractor, ejector and the firing pin. The INA Model 53 is made of stamped sheet metal. It's an open bolt design which means it fires when the bolt is in the locked back open position with a fixed firing pin. The firearm is stamped from 2 pieces of sheet metal which are shaped with integral rear pistol grip and magazine housing. The two pieces fit together like a clam shell with the hinge at the rear of the pistol grip. It splits in half right down the middle of the top and bottom of the receiver. The entire firearm is held together with a barrel locking nut which is threaded onto the fore section of the two receiver halves. The folding stock is made of tubular steel and it folds onto the right side of the firearm. The Model 953 fires in full auto only and it also has a unique feature, a safety lever in front of the forward magazine housing. To fire the Model 953 you must grip the magazine housing and hold down the safety lever.

References

*Nelson, Thomas B. "The world's Submachine Guns." International small arms publishers: Cologne, Germany, '63