M&P 2.0 45 for duty/trigger pull

[M1A4ME]

Apex Tactical has a trigger pull weight chart on their website. It shows you what parts to use (factory vs. their parts kit) to put your trigger pull into a weight range you're looking for. For example, if you want a lighter trigger pull weight you use the factory trigger return spring. If you want the trigger pull weight to be heavier you use the Apex Tactical trigger return spring.

In your pistol's case a slightly heavier striker block spring or sear spring should get you over the 5 lb. minimum. Or the previously suggested heavier trigger return spring. Point is, you have options.

Take a look at their website, find that chart, go over it and decide whether or not the Apex Tactical trigger kit will work for your departments requirements.

You do know that the M&P .45 standard magazines (supplied with the new pistol) are 10 rounds. They make/sell another magazine that holds 14 rounds. Yeah, sticks out of the grip frame a lot more but they're great for your spare mags if you can find a mag. pouch that works with them. If I've gone through the mag. in the gun I don't care if the spare looks funny because it's got more rounds I'm glad to have available.

I've also got an XD .45 Tactical 5". Nice gun but it doesn't shoot the groups my 4" 2.0 M&P .45 shoots. My wife actually likes shooting the M&P 2.0 .45. Never complains about the recoil and she shoots nice groups with it. Plus Ps in the 9MM recoil more/sharper than the big 2.0 .45.

 

[WR Moore]

Stickgunner makes some good points. However, the thing I noticed is that the testing is done with gauges instead of a set of weights. NOWHERE in the competition world (except possibly some Olympic events where trigger weights are tiny) is that acceptable. I'd strongly suspect that absent a current calibration certificate would it be court acceptable. A set of calibrated weights would be the way to go.

Having said that, the technique of the tester also has quite a bit to do with results. The first time I watched torque wrenches being verified for a specific output (due to the need to make @#$% sure it meets specs for the purpose) I noticed that the wrench was being moved with a mechanical screw setup rather than by hand. Watching the trigger testing at serious events, the weight sits on a table and the gun movement is like watching grass grow or paint dry. A fixture might even be faster.

 

[McChemist]

From the initial posting in this thread
It was stipulated that the acceptance criteria was 5 lbs. This has only one significant figure. So 4.97 lbs is limited to one significant figure, or 5 lbs. They are not treating the data appropriately. A later posting mentioned a figure of 5.0 +/-0.1 lbs. Again, 2 significant figure. So 4.97 lbs rounds up to 5.0 lbs. That also indicates that an acceptable trigger pull is 4.9-5.1 lbs.

Since several of the actual experimental variances were addressed, it appears that actual specification of 5 or 5.0 lbs needs experimental/statistical data to justify its validity. S&W or others may have this data in their respective QC departments. I bought a S&W M&P 45 LE (an LE trade in if you can believe it) and liked to shoot it. Too bad 45 ACP costs too much. At $0.19-0.21 per rnd, my 9 mm get more use.

 

[TigerDude]

triggers are a lever, and if you pull on a lever to the end the force will be less. I don't know how you get around that, but it's a very government thing to create a standard you can't measure accurately.

 

[LVSteve]

triggers are a lever, and if you pull on a lever to the end the force will be less. I don't know how you get around that, but it's a very government thing to create a standard you can't measure accurately.

Or at least a standard without a procedure to define how it should be measured.

 

[jasonfreeland]

I'm sure you will try it out after installing it, before carrying it, but let me tell you why I mention it. I just had an Apex Trigger installed in my 2.0 10mm (same trigger as the .45) and it fails to reset about 70% of the time. Another member said that using the factory trigger return spring fixed the same problem with theirs, but I haven't had the chance to try that yet (due to arthritis any changes have to go through a gunsmith). Kind of hard to get it fixed on a Sunday, much less Father's day. All I have to say is good luck, I hope the trigger works out for you.