[kyoto kid]

...so what exactly  is the cost for Gyrojet rounds?  I looked through both Run & Gun and the accompanying Errata and could find nothing on pricing of the various round types (Gel, Normal, AV, EX, APDS, etc).

[Marcus Gideon]

Run & Gun errata, pg 2

P. 55, FLAME THROWER AMMO, AV ROUNDS,
GYROJET ROUNDS, GAUSS ROUNDS MISSING
FROM AMMO PRICES
The box does not contain stats for some ammo types mentioned
elsewhere in the book. The stats should be as follows:
Fuel canister: Avail 16F, Cost 40¥, 4 charges
AV rounds: DV —, AP Mod –1/–5(–1 for personal, –5 for
vehicle armor), Avail 14R, Cost 175¥
Gyrojet ammo: DV –2S(e), AP -5 Avail 14R, Cost 160¥
Gauss: DV —, AP —, Avail 18F, Cost 400¥

[kyoto kid]

...OK got it.  Thanks.  Getting old, need to get cybereyes.

So when one wants say a Gel or EX round do you stack the cost on top of the base 160¥?

[Marcus Gideon]

Run & Gun pg 26, FN-AAL Gyrojet Pistol

The gun fires miniature 6mm rockets that explode on impact—an effect that, underwater, is even worse than in the air.

You don't get to fire Gel or EX bullets. You're firing rockets. Notice on Core pg 435 there is a listing for 3 flavors of rockets, and that's it. There are no Stick-n-Shock rockets, there are no Tracker rockets, there are no Capsule rockets. Only in this instance, you're firing super tiny pistol-ish sized rockets.

[Novocrane]

...OK got it.  Thanks.  Getting old, need to get cybereyes.

So when one wants say a Gel or EX round do you stack the cost on top of the base 160¥?

I'd compare with 4e, and use the 5e errata for taser rockets.

Standard Gyrojet Rockets — — — 12F 80¥
Gyrojet Plus Rockets +1 — — 16F 200¥
Gyrojet Taser Rockets 6S(e) –half — 14F 300¥
Gyrojet Tracker Rockets
with Security Tag — — — 14F 200¥
with Stealth Tag — — — 16F 125¥

There are no Stick-n-Shock rockets

Not much point in introducing them, now that gyrojet ammo is -2S(e).

[kyoto kid]

...in 3rd ed (the last edition I played and GM'd extensively in) they had Standard and Gyrojet Plus rockets (the latter being useful against vehicles).

In Run & Gun on P. 26, the following is mentioned:

FN makes a full array of alternate munitions that match up well with their standard counterparts.  Jelly rockets (Gel) are awesome

The R&G Errata mentions on page 3 (for Ammo Specific Called Shots ) that both Gyrojet Tracker and Gyrojet Plus rounds "are not in the book and should be removed from this list" 

It would also make sense that the Standard (10DV) rockets were the same availability as the weapon (12F)

For now I'll just get the Standard ones as per 4E until this gets sorted out.  Seems like there needs to be a revision of the Errata to explain just what is available as well as give the corresponding prices and availability.