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S&W hammer

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Post by binski Thu Mar 28, 2013 9:12 pm

I've seen a few S&W M14s for sale lately that are either SA or DA only.Can they be changed back to a standard hammer that does both? And if so are the replacement hammers available.I would like to buy one for the DP match, but not fast enough for SA only or steady enough for DA only.I"ve been using a 686 with .38 Special SWC but would like to not have to keep cleaning the crud from the chambers. binski

binski

Posts : 16
Join date : 2013-01-26

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Post by rvlvrlvr Fri Mar 29, 2013 12:32 pm

The stock S&W SAO hammer does not have a slot cut for the double-action sear (nor a hole drilled for the pin to hold in the DA sear). The stock S&W SAO trigger does not have the second 'shelf' to finish lifting a standard hammer the rest of the way after the DA sear disengages the first 'shelf'.

DAO hammers are usually standard hammers that have had their single-action sear notches ground off, so that the trigger will not 'catch' the hammer for single-action shooting.

I can have pictures of the various parts posted tonight.

SAO and DAO parts can be swapped out for standard parts (might require gunsmith fitting).

Shooting single-action through all stages of fire is not really that difficult, though it requires practice and an acceptance of your 'wobble' - as someone told me at my first 2700 match (I was shooting S&W revolvers, single-action, through all stages of fire), "you have plenty of time to cock the hammer", meaning that there isn't much time left over to tick-off the shot, so getting your sight/target alignment and wobble settled quickly is important. It also helps to have a good cadence/rhythm, and (for me) to hold the grip a quarter-inch lower or thereabouts to allow my thumb to reach up and cock the hammer without disturbing the rest of my grip (if I hold the grip as high as I can, cocking the hammer messes with the rest of my grip; holding lower alleviates that).
rvlvrlvr
rvlvrlvr

Posts : 193
Join date : 2011-06-10
Location : Northern Virginia

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Post by binski Fri Mar 29, 2013 8:08 pm

Thanks rvlvrlvr.I"ve tried shooting all SA.Slow fire is alright,timed fire will maybe be alright with more practice,but rapid fire is a train wreck.I keep fighting the heavier muzzle of the 686.I'll keep on praticing till I find a standard M14 or can make the 686 behave. binski

binski

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Post by rvlvrlvr Sat Mar 30, 2013 1:08 am

Since I was taking pictures, I figured I might also make a few videos and upload them. It was an excuse to play with my (relatively uncommon) S&W Model 68, anyways...

DA/SA:


DAO:


SAO:


S&W hammer 8601356651_d9c28fe0f1_b

S&W hammer 8602456426_26f13a0832_b

DA/SA: hammer has double-action sear and single-action notch:
S&W hammer 8602456920_28fde3da75_b

DA/SA: trigger has second "shelf" for double-action:
S&W hammer 8601357801_bc45e40324_b

DAO (neutered): hammer has double-action sear, but the single-action notch has been removed (the trigger is unchanged):
S&W hammer 8601357437_18d03aa015_b

SAO (factory): hammer has no double-action sear, retains single-action notch:
S&W hammer 8602457014_a5f8c8ae44_b

SAO (factory): trigger has no "shelf" for double-action:
S&W hammer 8601357913_728c51861b_b
rvlvrlvr
rvlvrlvr

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Post by binski Sat Mar 30, 2013 10:11 am

Thanks again.Those pictures show how its done.I"ll know what I"m looking for if I get the pistol. binski

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