The safety is a lever on the left side and locks the barrel and barrel extension as well as stopping the sear from moving.
22.
The bolt carrier and bolt then continue to the rear together guided by fixed guides while the barrel and barrel extension return to battery.
23.
The barrel is locked by means of a rotary bolt with multiple radial lugs that engages the barrel extension, eliminating the need for headspace adjustments.
24.
Most Nerf blasters have tactical rails that accommodate different attachments, but there are also some that attach through special adapters like barrel extensions and stocks.
25.
At this point, the bolt is locked into the barrel extension by locking lugs, so the expanding gas forces the bolt carrier backward a short distance.
26.
The bolt assembly locks with the barrel's breech ( the end the cartridge is loaded into ) via a prong type barrel extension behind the breech.
27.
The rear end of the piston emerges through the barrel extension to contact the forward face of the bolt carrier, causing it in turn to move rearwards.
28.
The bolt is locked into place by a piece of aluminum which swings into place and engages a notch in the barrel extension to lock the barrel.
29.
The barrel breech is locked through a rotating bolt ( left rotation ) and uses three locking lugs to engage corresponding locking recesses in the barrel extension.
30.
As such, there is no transfer block ( locking block ) " per se ", and the barrel extension directly interfaces with the frame via the replaceable cross-pin.
