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correct hammer for NPM 4,245xxx
Not certain what the correct hammer should be in this carbine as I have had it a number of years. The hammer in this carbine now is a late I H
Barrel is IBM CORP front sight SN
slide is heart cut UN Flat bolt blued N14 trigger housing N8 push safety NS
Mag catch MN - might be incorrect ? sear LN Rear sight S
single rivet handguard TN recoil plate LN
stock is hi-wood TRIMBLE TN in oval cut cartouche is NPM over FJA next to crossed cannon
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04-26-2014 07:00 PM
# ADS
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IBM used only type 3 hammers
marked WMB-GMB-AMB
Bolt should be round
March/April of 44. The round bolt (type III) came in around serial number:
Inland 5 mil
Win 5.6 mil
Underwood 6.1 mil
Rock 4.6 mil
Qhmc 4.65 mil
SG 5.84 mil
Npm 4.4 mil
Ibm 3.9 mil
IP,S'G' and Stan Pro- no use
Last edited by c-j; 04-27-2014 at 10:57 AM.
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Flat Bolt is correct for NPM 4.24, MN mag catch is correct. Hammer would be NH
Last edited by Rustship; 04-27-2014 at 01:06 PM.
Reason: addition
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Thank you for the data. Forgot to list the front band is the early Type 1 with three small tack welds and unmarked, the swivel is stamped U I
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