Alrighty, here are a few to start with, I'll add more as I find them. I tried to make it as organized as possible, with snippet of original text, corrections and/or suggestions and notes as needed. The suggestions are of course merely that: suggestions.
Ripper - ... the chainblade rips and tears into it's target.
Correction: rips and tears into its target.
Notes: "it's" is never possessive, but always a trunctuated form of "it is".
Wine - ...its bound to have an excellent taste...
Correction: it's bound to have...
Raider Badlands Armour - Simple Raider outfit, threwn together from...
Correction: thrown together from...
Suggestion: cobbled together from...
Nuka Cola - ... the flavored softdrink of the...
Correction: soft drink
Med-X - A small syringe with morphine...
Suggestion: A small syringe containing/filled with/of morphine
Notes: Just a nitpicky suggestion. 'syringe with morphine' doesn't quite suggest that the morphine is actually in the syringe.
.308 caliber round - ... High accuracy.
Suggestion: High velocity.
Notes: Accuracy is generally an attribute of the weapon rather than the ammunition.
Missile - A rocket shell, with a smaller but designed to pierce armor plating.
Notes: Sorry if it's just me being slow, but I don't quite get the description, I'm guessing there are some words missing?
10mm SMG - The mp9 is considered to be one of the finest weapons in the world. The mp9 is easy to control, and...
Suggestion: ... finest weapons in the world. It is easy to control...
Notes: Not really a correction, just thought it sounds better without the word redundancy.
Flamer - ...Fires a spray of extremely hot, flamable liquid...
Correction: hot, flammable liquid...
Mesmetron - ...waves designed to affect higher brain functions...
Suggestion: ...designed to disrupt higher brain functions...
Notes: Purely a stylistic suggestion. I felt disrupt more accurately describes it than affect, which is rather ambiguous. Again, just a style suggestion, nothing to do with correctness.
Plasma rifle - The plasma burns and melts even through toughest armor plating.
Correction: even through the toughest armor plating.
Suggestion: through even the toughest armor plating.
Notes: There's a 'the' missing, although the word switch is again a stylistic suggestion. It sounds nice if you say it with a russian accent though.
Silenced 10mm pistol - ...perfect for those occassions...
Correction: those occasions
Sledgehammer: A large hammer with big handle.
Correction/suggestion: Large hammer with big handle/A large hammer with a big handle.
Notes: Arguable, I suppose. I don't know if there's a grammatical rule about this, but my every instinct tells me there is, so it's here in case someone knows for sure.
Hope this is what you wanted, and apologies if I inadvertently slipped any britishisms in there, I do that by default. Quite difficult to stick to american spelling.