D9Firearms

On a regular basis we call a variety of manufacturers whose products we use to get some additional information on a particular item. If you’ve been to our site before you will know that DPMS AR rifles are our favorite. DPMS has continuously supplied us with quality rifles and have 1^st rate customer service. Since we were getting ready to modify some DPMS rifles with a JP trigger upgrade, we decided to call JP Enterprises directly.

JP Enterprises is no exception when it comes to quality products and customer service. As I was placing my order for several JP triggers, they asked me if I needed any Speed Hammers. Up until now I’ve not installed one on my rifle and hadn’t had any request for them. The standard JP is premium to begin with and thought that for an after market product to an AR rifle, short of having a true professional gun smith mills it to perfection, this was all I needed. They informed to quite the contrary. (By no means am I disparaging gunsmiths.)

He proceeded to describe that the factory hammer has substantially more mass which increases lock time. (Lock time is the time from when the trigger releases the sear, the hammer travels through its arc strikes the firing pin strikes and the pin hits the primer). It’s during this time as the hammer is swinging through its arc that it is transferring part of the energy into the entire rifle causing the rifle/shooter to come off the point of aim. He explained with their low mass hammer it reduces the lock time and the amount of energy transferred into the rifle allowing the rifle to stay closer to the aim point.

He told me take my rifle and site in on a target and perform a dry fire test and see what happens. So naturally I had to investigate this, of course not that I didn’t believe him, but I grew up in Missouri (Show Me State). So I took out 3 rifles, a standard AR with no mods, my personal AR-10 with JP trigger, and then installed a JP with speed hammer into another rifle. Of course the standard is course and heavy and not really geared for high accuracy. Then I tried mine with the JP, and it was clean and crisp and you could feel the hammer and confirmed the dry fire test. During the install of the new trigger and speed hammer I have to perform several dry fire tests and so I knew the answer before I took the final test. You can hear, feel, and definitely see the difference with the Speed Hammer.

I will be placing another order with them to get additional speed hammers to retrofit my rifles and keep several on hand. This is a definite recommendation, especially if you are using the heavy barrel rifles. For the tactical rifles, it’s not imperative you have the speed hammer because pin point accuracy is not as critical.

If you’re interested in a JP Adjustable w/Speed Hammer please contact us here at D9Firearms. We would be glad to install one in your new rifle. If you like to do things yourself we will be glad to ship you one. (Both options of course for a nominal fee.) Also check out DPMS and JP Enterprises web site for more information.

http://www.jprifles.com/index.php

http://www.dpmsinc.com/

Once again thanks for checking out our site and if you would like to post your findings please sign up and we would be glad to hear from you.

Darrel

At D9 we have been working on the 308 Winchester bullet to develop a load that will deliver outstanding results. Currently, we’ve focused on the 168grn and have tested this specific load in three different manufacturer’s rifles. Additionally, since the same bullet will not always produce the same result in the same manufacturer’s rifle we have also tested it in multiple models. Currently we have tested this round in:

Tikka T3 (Tested in 3 different local client rifles, all sub MOA, best was .5 MOA)

DPMS LR-308 (This has been tested in the AP4, LR-308B, LR-308 24″, all .5 MOA or better)

Springfield Armory M1A National Match Loaded (Tested in 1 rifle with poor results 1.5+ MOA)

We are planning a test with another local client in the Remington 700 SPS Varmint in the coming weeks and will publish the results.

We are federally licensed to manufacture and sell ammunition. However, we only manufacture on a per order biases and require a minimum order of 50 rounds. If you are interested in 308 ammunition please contact us. Prior to ordering we request you acknowledge the inherent dangers of using custom loaded ammunition. (We do not load any rounds that we won’t shoot in our guns. A test sample is pulled from each batch and tested fired for accuracy and reliability prior to releasing.)

At D9Firearms are always glad to report great feedback on the rifles we sell and considering it also one of our favorite and recommended rifles we will lavish additional praise on this rifle. Our new client Tim, placed a DPMS LR-308 AP-4 w/Miculek Compensator and quad rail on order with us earlier this year. After about a 10 week wait the rifle came in. We then went to work to install a JP Adjustable to top it off.

Tim has provided us some good feedback on how the rifle performed with the Miculek Compensator. Additionally Tim provided us with some range photo’s of his DPMS LR-308 and AR-15.

Our next order of DPMS rifles will all come with threaded barrels to allow us to fit a compensator or flash hider. We also ordered the bull barrel rifles with this option as well. It added a few dollars to the cost of the rifle but offers you more flexibility when deciding what you want.

As always we appreciate your feedback.

I went out to do accuracy testing on the AP4. Shot a number of different types of ammo in the 150 and 180 grain variety. Didn’t have any in the 16x grain range to shoot. Thought I’d find out whether it shot heavy or lite better. What I actually found is just how bad some ammo can be. Some more recent dated mil surplus was at least 4+ MOA while some 1980 mil surplus was about only about 2 MOA. The commercial 150gr pulled in regularly at about 1 MOA. These would probably improve with the shooter. Pictures of targets did not turn out well. I learned just how much good (or bad) ammo can contribute to the accuracy equation. Basically, it shoots more accurate than I as a shooter can give it, I love this gun! May have to get another one in a year or so.

I did determine that you are right about the need for a tactical latch on the AP4 if you use the shoulder mounted left one-handed cocking method. The charging handle is too low on the stock and can pinch the finger. The tactical latch solves this problem. I’ve not run into the problem I had with the A2 where it kept releasing the handle, but being aware of it, I’ve avoided catching it on anything.

The Miculek compensator does reduce the recoil and I can shoot all day with the carbine. But, I will probably order a normal flash suppressor and test to see how it shoots. I don’t notice the blast noise while shooting, but is significant for most people standing even behind the shooter. Is a problem for shooters to the side and nearby, especially under the roof of the Mill Creek bench areas.

Finally, D9Firearms has added some items to it’s Consignment Page.  Our goal with this page is to offer our clients an additional place to advertise their firearms.  We hope you browse this page to see some interesting firearms.  Also feel free to submit your items for sale.  We plan to upgrade this page in the future to allow you to login and post your firearms.  Since this page is just in its infancy we will gauge the repsonse and make the necessary upgrades as postings increase.  Thanks for looking.