Lasguns
The following weapons: Lasgun, Laspistol, Long Las, Lascarbine from RT core rulebook benefit from the variable setting rule from Only War Core:
Lasgun Variable Setting: The M36 Lasgun has a variable setting option, allowing it to fire higher-powered bursts. It may be changed to overcharge mode, dealing +1 Damage, but using two shots worth of ammunition per shot fired. Further, the lasgun may be changed to overload mode, dealing +2 Damage and gaining +2 Penetration. In this case, the lasgun uses four shots of ammunition per shot fired, loses Reliable, and gains Unreliable.
Trade (Armorer)
The difficulty is equal to the acquisition modifier (if bought from the respective species in case of Xeno gear). So for example building a common item would be a +20 test, building a Rare item would be a -10 test. If stuff has no listed modifier (like the Kustom Jobs in ITS, it's a +0 test). Proper tools would grant +10, a proper workplace ( Manufactorum or equivalent) would grant another +10. In case of Orks, in regards to raw materials, as long as you don't try to make huge amounts of stuff and/or are in a really deserted or no-tech place, you should be good by scavenging what you find around you.
For the time it takes to build stuff, I'm thinking the following:
Using table 5-2 pag. 11 from RT core and Table 9-35 pag. 272 core:
You check the availability of the item that you want to build (or use a base of Scarce if none provided.
Then, instead of size of population you use the number of items you want to build, in the steps from table 9-35. So let's say you want to build 20 common items. You'd check the 4th line (for common availability) and 2 falls under Platoon (10-30) so 3rd step in table 9-35, so you'd check the 3rd column, for a build time of 1d5 days.
You can also use Trade (Armorer) to apply Weapon Customizations from Only War (pag. 190 of Only War Core and 122 of Hammer of the Emperor).
