If you have a Gyroscopic Stabilizer attachment and Gas Vent III modification/attachment, you can get -9 recoil (alternatively, Tripods do the same thing as Gyroscopic Stabilizers but don't help reduce movement mods), you can add a Shock Pad for -10 recoil, which should be plenty, and add Electronic Firing modifications (-11 in total), and you can still put on a Smartgun System. It's also pretty easy to build the final die pool up to 12 just from Agility and Heavy Weapons if you're willing to drop everything else for it, plus the Smartgun means 14 dice if you're totally specialized.
If I correctly understand that you're firing "Full Bursts", you should wind up with 9 recoil, which means you'll completely compensate for it, and the Smartgun System will compensate for one additional target or give a +2 die pool for your shooter.
Alternatively, I think that I read somewhere that you can also get strength/body based recoil reduction (Arsenal or 20th Anniversary Edition, but searching isn't turning it up).
For an adept, put six points in Agility, six points in Heavy Weapons, and max Improved Ability (Heavy Weapons); this should give you 15 dice (consider Natural Aptitude [Heavy Weapons] for the ability to put a seventh point in reaction), add Smartgun System's dice plus headwear (not head*ware*) that adds Smartlink capability, and you're at 17 dice, plus use the modified Vindicator above to get no recoil. If you use Enhanced Attribute [Agility] and Natural Aptitude [Heavy Weapons] you're throwing 19 dice and have 115 BP left out of 400 (and a few thousand Nuyen to spend in addition to what you needed for smartlinked glasses and the Vindicator with modifications). For enhanced lethality, include AV/APDS rounds (or explosive/hollow point ones if you're more open) and fire away. You can also add Attribute Boost or Improved Attribute; if you go the Improved Attribute path you can get an additional point (raising Agility to 8 and giving you 20 dice), though Boosted Attribute is cheaper (but the drain could hurt you). If you were willing to put three more points in Magic you would wind up with Agility 10 after Improved Attribute 3 (Agility), and your final dice should be 22; this would leave you with a mere 70 BP for other things, though, and some money.
Technically every creature in the game has Hit Dice.
Psicrystals have their master's number of Hit Dice, therefore, being intelligent creatures, they receive 1 feat at 1st HD, 1 feat at 3rd HD and 1 feat each 3 HD thereafter.
d20SRD:
Hit Dice: As master’s HD (hp 1/2 master’s)
While you do change some of the statictics as listed in psion class description, no HD change is mentioned.
The consequence of psicrystals having quite a bit of feats is maybe unintentional, but nevertheless logical implication of them having hit dice and being intelligent.
In my practice several DMs houseruled this out, without any arguing on the player's part, and I myself allow it.
Best Answer
You can see the relevant information in the Basic Rules and in the Player's Handbook, specifically:
And, as you gain levels:
Each class describes what kind of die it grants you as a Hit Die. For instance, the barbarian class description (PHB page 47) states:
As in 3rd edition, your Hit Dice are used to determine your maximum HP. Unlike 3/3.5e, in normal play outside of character creation or levelling up, your Hit Dice are also used as a resource to recover lost HP in a short rest (PHB page 186):
"Spent" Hit Dice are recovered by completing a long rest (PHB page 186):