Well, if you are sure the barrel bushing ("front cap") is locked in then you should be OK. These are pretty rugged and well-made pistols (one reason they remained in production for about 50 years).
If this is a Type I MAB D (the MAB D version made before mid-June, 1945), the barrel bushing is locked in place by a catch lever along the bottom of the slide. The Type II replaced this with a push-and-turn "bayonet" fitting for the barrel bushing and eliminated the catch lever. The earliest Type II pistols are technically WWII pistols, since while the war in Europe ended in May 1945, the war in the Pacific did not end until September 1945.
One thing to check is the condition of the recoil spring. If it (or the spring for the striker/firing pin) seem at all weak or questionable, new replacements can be bought for $8 a set (both springs) from Wolff Gunsprings (look under "French Semi-Automatic Pistols").
Originally Posted by HH7
I have a WWII MAB Cal 7.65 (.32 ACP) Model D that was given to me from my Grandfather. I went shooting without cleaning and oiling the gun and the front cap and recoil spring came off. I know that was dumb
. Anyway, I am excited about the gun and have sense cleaned, oiled and it now seems to be functioning properly without firing. Is it OK to load it up with some ammo and fire it or should I be concerned. If I shouldn't fire it what should I do to get it in firing condition?