Pull out mainspring from rear of bolt. Using a fine file, stone or sandpaper, smooth the back of the spring. The reason the BAS was hard to disassemble was that the rearmost cut end of the spring was digging into the inside of the BAS and keeping it from turning. By smoothing the end of the mainspring, you will make it much easier to unscrew the BAS in the future.
After smoothing end of mainspring, unscrew BAS by squeezing the bolt handle and allen wrench with your hands, instead of having to step on it.
Remove bolt handle by sliding it off end of bolt.
Remove cocking piece pin by pulling up from the side of the bolt (radially).
Pull firing pin out from the rear of the bolt.
Push bolt head against bolt body to relieve pressure on bolt head retaining pin. If bolt head retaining pin does not fall out, push out with fingers.
Remove bolt head, front baffle, and front baffle washer.
Step three: Bolt reassembly.
Insert bolt head, front baffle washer and front baffle into bolt body as shown. It is recommended by some that the washer location be changed from its factory location. If you install front baffle washer in between the bolt head and front baffle, the front baffle won’t wipe lubricant from the rear of bolt head lugs each time you cycle the bolt.
Make sure that hole in bolt body and hole in bolt head are lined up. Press bolt head and bolt body together while inserting bolt head retaining pin into bolt body, through hole in bolt head, and out the other side of bolt body. Ensure hole for the firing in is parallel with the axis of bolt body as shown.
Insert firing pin into rear of bolt body and through the hole in bolt head retaining pin. Tip of the firing pin should protruding through bolt head when fully inserted.
Insert cocking piece pin through cocking ramp cutout in bolt body into hole in the firing pin.
Insert mainspring as shown. Forward end of mainspring should rest in firing pin slot and also acts to retain or "capture" cocking piece pin.
Make sure firing pin is in the fired position.
vBulletin Message