Fits into the end of the bolt carrier key to ensure that the barrel nut is properly aligned during installation of AR-15/M16 barrel. Improper alignment can damage the bolt carrier key and/or the gas tube.
SPECS: Steel. .178" (4.5mm) diameter x 3" (7.6cm) long.
More...
Customer ratings for BROWNELLS BARREL NUT ALIGNMENT GAUGE
Number of ratings: 3
From brownells.com: 3
Average rating: 4.7
Simple, yet effective(14/09/2009)
For such a simple part, this is quite effective. Saves time and effort aligning the barrel nut.
A simple part that works as advertised(14/03/2010)
This part works as described, but is so simple, you could make one yourself from a rod purchased at [...].
works great(08/06/2014)
Bought this so I wouldn't have to always be bringing tubes and stuff to block to help align and it works good as I had lost my other drill bit I used and just decided it could stay with gun tools. The milling on it is about the roughest,crudest,worst I have seen but hey it's not for use other than a guage
Fits into the end of the bolt carrier key to ensure that the barrel nut is properly aligned during installation of AR-15/M16 barrel. Improper alignment can damage the bolt carrier key and/or the gas tube.
SPECS: Steel. .178" (4.5mm) diameter x 3" (7.6cm) long.
More...
Customer ratings for BROWNELLS BARREL NUT ALIGNMENT GAUGE
Number of ratings: 3
From brownells.com: 3
Average rating: 4.7
Simple, yet effective(14/09/2009)
For such a simple part, this is quite effective. Saves time and effort aligning the barrel nut.
A simple part that works as advertised(14/03/2010)
This part works as described, but is so simple, you could make one yourself from a rod purchased at [...].
works great(08/06/2014)
Bought this so I wouldn't have to always be bringing tubes and stuff to block to help align and it works good as I had lost my other drill bit I used and just decided it could stay with gun tools. The milling on it is about the roughest,crudest,worst I have seen but hey it's not for use other than a guage