Guys, I ran about 200 rounds of Winchester 230 gr fmj (factory ammo) through my WH M1 yesterday when the grip mount popped loose. It worked its way forward about a half inch. (The barrel is still tight but the grip mount slid forward.) Since the barrel has to be removed before the grip mount can be removed, what has happened? Can it be fixed (short of a spot weld or staking it, both out of the question) without removing the barrel? Anyone have a spare 1/2 grip mount and forearm they'd be willing to part with?
TIA
Grip Mount Issues
Started by
Bill in VA
, Aug 10 2003 08:19 AM
5 replies to this topic
#1
Bill in VA
-
- Regular Group
-
- 672 posts
Long Time RKI Member
- Gender:Male
- Location:Southwest Virginia
Posted 10 August 2003 - 08:19 AM
#2
Bisley45
-
- Regular Group
-
- 602 posts
Long Time RKI Member
- Gender:Male
- Location:Illinois ( Gun Owner's Hell )
- Interests:Thompsons, 1911's, Collect & Shoot Colt Pistols and Revolvers, American Civil War, anything that shoots
Posted 10 August 2003 - 04:41 PM
Was it a milled or stamped grip mount ? Did the pin break ? I got rid of my spare grip mount but got a milled grip mout from IMA for $30, finish wasn't anything to brag about but the metal condition was good. I don't know how the grip mount could come out unless something broke, and if it was a stamped forend a milled one would be an upgrade.
BB
BB
#3
Kevin
-
- Regular Group
-
- 257 posts
Regular Member
- Gender:Male
- Location:western, TN
-
Interests:Airplanes
Guns
Hot Rods
Posted 10 August 2003 - 05:22 PM
Some of the WH grip mounts are made of aluminium instead of steel. The little tab that sticks up behind the last barrel rib ( the thick one that butts up to the receiver) holds the grip mount in place. It probably broke off. You might as well get a steel one as it will be much stronger. The steel ones you can get are probably three piece but it would be an improvement.
#4
Kevin
-
- Regular Group
-
- 257 posts
Regular Member
- Gender:Male
- Location:western, TN
-
Interests:Airplanes
Guns
Hot Rods
Posted 10 August 2003 - 05:27 PM
Whoops 
just saw that you have an M1. You don't have a finned barrel but the M1 barrel is the same OD as the finned ones. The barrel still holds your grip mount in place.
just saw that you have an M1. You don't have a finned barrel but the M1 barrel is the same OD as the finned ones. The barrel still holds your grip mount in place.
#5
must
-
- Regular Group
-
- 203 posts
Long Time Member
- Location:northern Utah
- Interests:all Thompsons, M1 carbines, & early Mustangs
Posted 10 August 2003 - 06:20 PM
I had the same thing happen with my WH M1 & it was a broken rivit. PK installed a 1/2 milled grip mount & I installed a grip mount reinforcing band on it (I bought it from Gun Parts Corp. for $15.00. Don't buy on e-bay, I've seen them go as high as $90.00). I'm a happy camper since PK got through fixing my WH M1 up! 
#6
PK.
-
- Board Benefactor
-
- 1587 posts
Technical Expert
- Gender:Male
- Location:CO, USA
- Interests:Full time gunsmith who loves Thompson's, 43+ years experience.
Posted 11 August 2003 - 08:15 AM
It does indeed sound like the stud on the gripmount has broken. Replacement with a milled steel GI unit is the best fix. The barrel will have to be removed and replaced in order to do this. I assume you have a ¾” gripmount currently as well as a horizontal foregrip. Your current foregrip can be re-bedded with resin to the new ½” gripmount and need not be replaced.
