Heres what the WA state law says and read it good, It says you need a class 7 license to build a firearm
Posted on April 4, 2014
The new law takes effect on July 1st of 2014 and contains several “gotcha!” provisions for the careless and unwary. These provisions could potentially land the victim in jail or paying stiff federal or state legal penalties.
While a WA gun owner may possess/transport/acquire or transfer a short barreled rifle in accordance with Federal law under the provisions of SB5956 – they may not lawfully manufacture or assemble such a device, nor may they loan or furnish it to others.
Translated, you can’t let your buddy or your family use your shiny new SBR – you, and only you, as the licensee may have or use the SBR (unless the SBR is owned by a trust or corporation and those persons are named as beneficiaries or members of the corporation)
READ THIS
Only a Class VII Federal Firearms Licensee (Manufacturer) may legally assemble or manufacture a short barreled rifle in WA – and then only for use by the military, law enforcement or export. Thus, WA residents wanting a short barreled rifle may need to obtain them from out-of-state manufacturers.
Even if all this weren’t true, for a Washington resident to make (manufacture or assemble) a short barreled rifle legally under federal law (and thus under state law) – even as simply as dropping in a short barrel to a pre-existing firearm or hack-sawing the front end few inches off – the builder would have to complete an ATF Form 1 (requiring CLEO sign-off), pay $200, endure an lengthy background check over a period of several months before being legal.
Given that even after SB5956, making SBR’s remains illegal for WA residents – and the ATF is reasonably unlikely to sign off on Form 1’s for an illegally manufactured device2.