hk 91, g3a3, cetme, ptr 91 head space (bolt gap)


festus

God Bless Our Troops!!!
1. let the bolt and carriers snap fwd on an empty chamber
2. set weapon to fire
3. pull trigger
4. measure gap between bolt head and bolt carrier Should be .004-.020
5. change rollers to obtain correct gap


Caution...some rifles built on parts kits have a ground head to give a false gap. If the head has been ground in any way replace the head and readjust the bolt gap to .004-.020
 

New Threads

Members online

Latest posts

Forum statistics

Threads
49,525
Messages
611,154
Members
74,892
Latest member
AdamGlock
Back
Top