G&P WA GBBR Assembly Parts Set (FRAME SET)

This set from Western Arms covers pretty much all of the miscellaneous gubins that go inside a WA GBBR M4 receiver sans the major components. Combine this set with a bolt carrier group, buffer tube, buffer, recoil spring and cocking handle for installation into a receiver for the working mechanism then add the hop-up, inner and outer barrel, front set, grip and stock for a complete M4 GBBR.

The purpose of this kit is to allow you to custom select your own externals, bolt carrier, handle, tube and buffer assembly to your own specifications and let the kit sort out the headache of the minor things so you don?t have to think about them. - WA Selector/Pin/Spring - WA Bolt Stop/Spring/Pin/Firing Block/Pin/Firing Pin/Spring - WA Forward Assist/Spring/Pins - WA Trigger/Spring/Pins/Sear - WA Magazine Catch/Spring/Trigger Guard - WA Hammer, 120% Spring, Pin Set - WA Hammer Lock Set - WA Buffer Lock/Spring/Buffer Retainer Block/Bolt Rubber/Grip Screw - WA M4 Dust Cover Set