Original sentence: D-56T rifled tank gun (no bore evaluator, long multi-slotted muzzle brake and fume extractor).PT-76 Model 1 (Ob'yekt 740, 1951) - An original PT-76 with a 76.2 mm
Edited sentence: PT-76 Model 1 (Ob'yekt 740, 1951) - An original PT-76 with a 76.2 mm D-56T rifled tank gun (no bore evaluator, long multi-slotted muzzle brake and fume extractor)