Well if you start w/LOg 6(9) {Cerebral Boosters) and Armorer\Firearms 6\+2 and have 6 Edge you can reasonably expect to get to Level 4 in the extended test to replace the metallic parts of the ingram givg a -4 DP modiffer when the MAD scanner is being used.... mind you, you have to use edge on the first 6 rolls... and hey, you could get super lucky and get to level 5