s400 trigger

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eric83
Posts: 6
Joined: Thu Feb 22, 2018 4:20 pm

s400 trigger

Thu Feb 22, 2018 4:27 pm

hello, i recently bought an s400 old but great condition ! my concern is that it does not have a safety catch ! Is it poss.to fit a trigger with the safety catch ? thanks

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Roger5
Posts: 1071
Joined: Sat Jul 25, 2015 8:04 am
Location: Hampton middlesex

Re: s400 trigger

Thu Feb 22, 2018 5:43 pm

eric83 wrote:
Thu Feb 22, 2018 4:27 pm
hello, i recently bought an s400 old but great condition ! my concern is that it does not have a safety catch ! Is it poss.to fit a trigger with the safety catch ? thanks
Funny one this, most people spend money getting rid of the trigger with the safety button and fitting a Rowan, I've never believed a safety button in the trigger is a good idea. Rog

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TenMetrePeter
Posts: 1043
Joined: Wed Jun 29, 2016 5:40 pm
Location: Luton Beds UK

Re: s400 trigger

Thu Feb 22, 2018 5:48 pm

Yep relying on a safety not safe. Carrying a loaded cocked rifle is the only reason for a safety and that should never happen in my opinion.

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eric83
Posts: 6
Joined: Thu Feb 22, 2018 4:20 pm

Re: s400 trigger

Thu Feb 22, 2018 6:13 pm

Thanks for that guys

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Blackbaronfish
Posts: 3690
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: s400 trigger

Thu Feb 22, 2018 6:25 pm

I totally agree with all that have been said above.
Rowan Engineering do an excellent trigger that will transform your gun no end. They have a brilliant customer support and have had a long relationship with the AAOC

BBF
Did I mention that I'm the only one to have attended EVERY meet since we started

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rob2hook
Posts: 39
Joined: Sat Jul 21, 2018 10:29 am

Re: s400 trigger

Fri Sep 07, 2018 10:51 pm

I can't see any reason why a later OEM trigger shouldn't fit and work correctly. The pics I've seen of the early S400s have a more set-back trigger, much like the Rowan replacement! Also possibly of interest and significance is that I would expect your trigger unit to be of the two sear type. Later units have three sears, although I have seen pics of such a unit which had the holes drilled for the three sears - so probably all the parts are interchangeable. It seems that the AA trigger with the safety fitted had to have the blade moved forward to allow the fitting of the safety, which (while effective) is no more sophisticated than a door bolt.

Perhaps someone who has fitted Rowan trigger will sell you the original to try out?

Rob.

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TenMetrePeter
Posts: 1043
Joined: Wed Jun 29, 2016 5:40 pm
Location: Luton Beds UK

Re: s400 trigger

Sat Sep 08, 2018 1:22 pm

You need new bottom sear and middle sear with middle sear pin to convert from 2 to 3 sear operation, provided the unit is drilled for the middle sear.

Triggers should be interchangeable for 2 or 3 sear operation. Not all support anti rattle rear spring.

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tonyc
Posts: 376
Joined: Mon May 29, 2017 10:55 am

Re: s400 trigger

Sat Sep 08, 2018 4:38 pm

The anti-rattle spring, like the safety, is a bit of naff design. If you fit a Rowan trigger it has no spring. One advantage of the loose trigger is you know instantly if the gun is cocked or not.

There is a point in having a safety - only if the gun can't be un-cocked - as it's not always convenient to discharge the weapon. With magazines I always leave the first chamber empty, put the mag in and un-cock the gun. (I know you can put AA mags in without cocking but not so for some other makes.)

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