Wise Lite Arms semi-auto only Bren

[AmEngRifles]

Never heard of a problem. The Wise Lite conversion uses the buffer tube for the striker spring, eliminating the buffer. Another type of conversion puts the striker spring on the return rod and keeps the original bolt buffer.

Do you need the buffer in semi at 30-40 rds/min ? Probably not. At full auto, 500 rds/min, it may be a different story.

Joe

Joe, is the buffer there to address full auto battering? Or strictly to soften the blow for the shooter? I suspect even a semi auto may benefit from a longer service life to metal parts that are buffered. But acknowlege that a full auto firearm, like any support weapon, would benefit from buffering.

Can’t the buffer be retained AND a striker operating spring telescope into the buffer tube? Or is there just not enough room for both?

I ask because I am in the process of trying to alter my HA Bren into a striker spring that utilizes the spring tube instead of the original large diameter spring held within the body of the firearm between the striker and the rear face of the trigger frame.

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[Joe H]

Joe, is the buffer there to address full auto battering? Or strictly to soften the blow for the shooter? I suspect even a semi auto may benefit from a longer service life to metal parts that are buffered. But acknowlege that a full auto firearm, like any support weapon, would benefit from buffering.

Can’t the buffer be retained AND a striker operating spring telescope into the buffer tube? Or is there just not enough room for both?

I ask because I am in the process of trying to alter my HA Bren into a striker spring that utilizes the spring tube instead of the original large diameter spring held within the body of the firearm between the striker and the rear face of the trigger frame.

Amrifles,

Can't disagree with any of your comments about buffering.

I know of 4 different striker setups.

In Version 1 which I think is the Historic arms version and shown below as Bren Striker 1 the striker is powered by a large dia. spring that is compressed into a recess provided in the rear stock.
In Version 2 the striker spring is above the return spring and compresses into a tube in the area formerly housing the buffer spring.
In both 1 & 2 the breech block (bolt) buffer has been removed for the semi auto operation.
Version 3 uses a long small dia. spring on the return rod as the striker spring. In this version the buffer stays in place.
Version 4 is an excellent new version by "Mighty Lime" and is detailed in the link provided below.
In Version 1 & 2 as the bolt moves rearward it compresses both the striker and return spring on the rearward movement. The striker is cocked as the bolt moves to the rear. The return spring then pushes the bolt and carrier forward to the closed position.
Version 3 operation is somewhat different. As the bolt moves to the rear only the return spring is compressed. As the bolt and carrier move forward the striker spring is compressed and the striker is cocked.
Version 1 & 2 need adequate gas pressure to compress the original return spring plus the striker on the rearward motion under the gas pressure.
In Version 3 the striker spring is compressed by the return spring so that the return spring must be fully compressed and have adequate power to both return the bolt and carrier and cock the striker. Since in any striker semi the return spring cannot compress completely due to the length of the striker, a spacer equal to the length of the striker is often placed at the rear of the return spring to assure complete compression which is particularly important in Version 3.
I’ve built a couple of Version 3. It does take some tweaking to get the striker spring right. Both would work on gas setting 3 or 4 with no modification to the gas system. An original FA Bren would work reliably on #1 or #2.



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This info should help you with your project.

Joe