ptr-91 fixs

[cz777]

well a ptr-91[with less than 700rds ] which was broken ,repaired! hk new stock and the fun was the bolt gap setting was below .004 -new HK locking piece got .006 worked ok 100 rds shot - good next got +4 rollers and ptr ''comfort ''buffer now BG is .011 so range time again ....will review the ptr buffer too

[mofocus]

let us know how it goes

[cz777]

the parts [all hk made]replaced was stock , +4 rollers and locking piece .the locking piece has pitting of casting not rust which is weak with ''0''marked rollers bolt gap was .003 ,with the hk locking piece bolt gap went to .006 .the ptr locking piece also has no flats in around with the locking lug which holds piece in the bolt carrier ,plus the front part is very crudely ground . now she has .279mm /.011 sae bolt and working well ! i also tried the ptr comfort zone buffer for $50 but it worked for 400 rds fired not worth it! the range report 1.5'' groups at 100 yds with s.a. :thumbup:

[bspring]

The only buffer worth a darn is the G3 heavy 2 stage, next would be the MSG-90.

Bill