Range Report of New Bushmaster

Jaywalker:

Bartholomew, you're right. It's strange that I associated that brand with your advice. Did you perhaps recommend it to someone else at some time in another thread? Also, I saw more muzzle flash than I expected, and wonder if that level is what I'll see with the Lake City M193.

No, not that I recall. I'm going from memory here so you might want to verify it; but the Lake City should show less flash since I don't believe Winchester includes the flash retardant in the civilian Q3131 or the Q3131A( same round but manufactured in Israel).

M855 or SS109 with NATO headstamp will also have the flash retardant.

Absolom:

Bartholomew: No, I REALLY wanted to know. I've fired several thousand rounds over my JP trigger. There doesn't seem to be any fragility about the JP design, nor the Compass Lake design. I haven't personally seen a Jewell, but I do know that Jewell has one of the best reputations in the business for quality triggers.

If you REALLY wanted to know, you'd hop over to the Tactical Forums and ask instead of repeating speculation and questions to someone who has already explained that they only have used one brand (Rock River) of aftermarket trigger. I can only assume you have some other purpose with the above comment and I'm missing what that is. Perhaps you could elaborate?

Other than quoting an article by somebody else, I thought that you might have some personal negative experiences or had made some personal observations of aftermarket AR triggers.

As far as aftermarket triggers go, my best stock Bushy trigger is a single stage with a 5lb pull and a tiny bit of creep that is barely noticeable. My RRA NM aftermarket trigger is a 4.5 two-stage trigger with no creep at all, a short first stage and a crisp break. I like them both; but I was a little disappointed that the $85 RRA trigger was only marginally better than the $24 worth of Bushmaster mil-spec parts (trigger and hammer).

Although it is worth keeping in mind that RRA produces a consistent trigger. If I buy a new one, I know that the pull isn't going to be much different than the one I have.

With Bushmaster, its just luck of the draw on how well the different surfaces mate. Triggers can be anywhere from 5-9lbs and taking a hammer from a gun with a heinous trigger pull and matching it with a different trigger might improve it or it might make it worse. You kind of have to play with the parts to see.

Then again, you can buy 3 hammer/trigger sets from Bushmaster and still save money over the discounted price I paid for the RRA trigger.

Things I like about the RRA trigger: Good crisp two-stage trigger and I love the oversized trigger and hammer pins that reduce the problem of trigger pin walk to nil. I also like that it makes the disconnector a fixed part of the trigger - one less item to break/get lost/etc.

One thing that concerns me about it is that the hammer uses a different spring arrangement and a much lighter, narrower hammer. I am concerned with how well this hammer will do with military surplus ammo with hard primers. I think I may see some light strikes there; but I haven't had a chance to test that theory yet so I could easily be wrong. I haven't used any other brand of aftermarket trigger; but I've noted that most of them share the lighter hammer design so that may be an issue with other brands as well.

I'm not sure what relevance there is to a test done for military/tactical purposes of a military weapon, when we're talking about AR's used for personal pleasure.

Well, the quoted part from Pat Rogers made it clear he was talking about service rifles - not bench guns, varmint guns, what have you. If you don't feel the test is relevant to what we are discussing then why are we discussing it?
 
I doubt if the originator of the thread has any plans for combat with this newly-acquired Bushy.
Nope, while I'm interested in reading about the capabilities of the rifle, including its tactical usage, I don't expect to do any housecleaning with it. I didn't get to see or use it during my Service; aircrew just qualified with handguns - S&W .38s, at that.

I'm very interested in aftermarket triggers, though, because I expect to get one in a year or so. Bartholomew's comments were particularly striking:
Things I like about the RRA trigger: Good crisp two-stage trigger and I love the oversized trigger and hammer pins that reduce the problem of trigger pin walk to nil.
I would have thought this oversizing of pins would rule out that RRA trigger, with that one factor tending to cause more wear, at least during disassembly, per MarylandAR15Shooters site. I take it that is not an overwhelming factor. Do either JP or the RRA have more parts than the MilSpec, like set screws or the like?

Ordered the 1000 rounds Lake City M193 and 5 20-round mags from Ammoman, by the way.

Jaywalker
 
I would have thought this oversizing of pins would rule out that RRA trigger, with that one factor tending to cause more wear, at least during disassembly, per MarylandAR15Shooters site. I take it that is not an overwhelming factor. Do either JP or the RRA have more parts than the MilSpec, like set screws or the like?

Well, I never disassemble any of my lowers after they are put together (the one exception being a parts gun that somebody had stoned the trigger on to the point that it doubled). Generally, you can clean them fine without ever driving out the hammer or trigger pins.

The RRA pins are just slightly oversize (they use the milspec holes but its a tight fit and you need a little grease to get them in). The nice thing about that is that the trigger pins don't work loose under recoil like the GI pins are prone to do.

As far as wear, I suppose it is possible that the slightly oversize pins would wear on the aluminum receiver enough that trigger pin walk would be even worse if you switched back to a GI trigger; but that's about all I can think of.

I can't speak for JP; but the RRA actually has less parts than the MilSpec. The disconnector is part of the trigger assembly so you have one unit vs. the two in a MilSpec gun. It also lacks any type of set screw which means you can't adjust it to suit your preference; but its a pretty nice trigger. They are a consistent 4.5lb pull, crisp two-stage trigger.

My main concern with the RRA trigger (which I already discussed) is the ability of the hammer to fire harder primers reliably. I really haven't had a chance to wring it out yet, so I'll have to wait 1,000 rounds or so before I feel comfortable with it.

Here are some pictures of popular aftermarket triggers:
http://www.ar15.com/forums/topic.html?id=75943
 
Targets

Okay, good info, and I'll keep that in mind when I get a new trigger.

Does anyone know where to download targets? If you recall, I was using the wrong 50- and 100-yard targets for iron sights. I used to have urls for web sites that had them, but I think I've moved them into the bit bin.

Jaywalker
 
Back
Top