Advertisement

M1A Accuracy Issues: Bolt Lugs

M1A Accuracy Issues: Bolt Lugs

When installing a new rifle barrel the chamber is cut to optimum headspace. Headspace is the distance from the bolt face to a datum point on the shoulder of the cartridge. Bolt lugs that do not bear evenly in the receiver locking recesses may wear quickly and set back. opening up this critical dimension. Accuracy and smoothness of operation may also be degraded. Lapping lugs is a common practice when tuning bolt guns, so what about semi-auto battle rifles like the M1A and M1 Garand? Same concept.

Checking lug fit is best done with the barrel removed so you can clearly see the locking recesses in the receiver where the bolt lugs live. Strip the bolt. Degrease the receiver and the bolt lugs and paint the flat bearing surfaces in the receiver with a marker or Dykem layout fluid.

Read The Full Story On Firearms News

Recommended Articles

Advertisement
Advertisement

Get the Newsletter. Get it all.

Subscribe today and get the latest reviews, tips, recipes and more.

Sign Me Up