▁ 1 7 5 6 ▁and ▁the ▁Short ▁Land ▁Pattern ▁of ▁ 1 7 6 8 , ▁which ▁both ▁had ▁a ▁ 4 2 - inch ▁( 1 , 0 6 7   mm ) ▁bar rel . ▁Another ▁version ▁with ▁a ▁ 3 9 - inch ▁( 9 9 1   mm ) ▁bar rel ▁was ▁first ▁manufact ured ▁for ▁the ▁British ▁East ▁India ▁Company , ▁and ▁was ▁eventually ▁adopted ▁by ▁the ▁British ▁Army ▁in ▁ 1 7 9 0 ▁as ▁the ▁India ▁Pattern . ▁ ▁Tow ards ▁the ▁end ▁of ▁the ▁life ▁of ▁the ▁weapon , ▁there ▁was ▁a ▁change ▁in ▁the ▁system ▁of ▁ign ition . ▁The ▁fl int lock ▁mechanism , ▁which ▁was ▁pr one ▁to ▁mis f iring , ▁especially ▁in ▁wet ▁weather , ▁was ▁replaced ▁by ▁the ▁more ▁reliable ▁per cussion ▁cap . ▁The ▁last ▁fl int lock ▁pattern ▁manufact ured ▁was ▁selected ▁for ▁conversion ▁to ▁the ▁new ▁system ▁as ▁the ▁Pattern ▁ 1 8 3 9 . ▁As ▁a ▁fire ▁at ▁the ▁Tower ▁of ▁London ▁destroyed ▁large ▁stock s ▁of ▁these ▁in ▁ 1 8 4 1 , ▁a ▁new ▁Pattern ▁ 1 8 4 2 ▁mus ket ▁was ▁manufact ured . ▁These ▁remained ▁in ▁service ▁until ▁the ▁out break ▁of ▁the ▁Crime an ▁War ▁when ▁they ▁were ▁replaced ▁by ▁the ▁M ini é ▁and ▁the ▁P 5 3 ▁En field ▁rif led ▁mus ket . ▁ ▁See ▁also ▁▁ ▁British ▁military ▁rif les ▁ ▁List ▁of ▁wars ▁involving ▁England ▁ ▁List ▁of ▁wars ▁involving ▁Great