About five months ago, I began my review of the Colt M5. Now, this is about twice as long as I usually take, but with this rifle, I wanted to make sure I did my due diligence. The M5 appears to me as an AR-15, utilizing an extended receiver and proprietary barrel nut. The benefit…
The following is BPM Inc. industry Technical document with fundamentals of Gas Pressure/port size, relative to function- in the M4/AR weapons platform. Includes excerpts/statements /quotes from leading industry discussions in the last decade, relative to reliable SBR/suppressor usage/life expectancy of SBR type configurations. We hope you find this information useful. 1-1-2019 Andrew S Barnes BPM…
Several months ago, the CZ Ti Reflex silencer showed up for review, and we put it to the test right away. Note the ridges on the silencer where the body fits the welded titanium baffles. This increases surface area for cooling, similar to cooling fins on an air-cooled engine, and decreases weight The reflex part…
It was a couple of months ago I received the Riton RT-S MOD 3 Gen 2 1-4×24/IR and mounted it onto the obnoxious Barnes Precision Machine 7.5″ pistol to begin testing. After getting it zeroed and shooting some 100 yard groups with the pistol/scope combo here is what we learned. At one power…
I was at a Sig Sauer/High Speed Gear media day earlier this year, you can see that article and video by following this link, and during the live fire portion of the event, I noticed that a single RO was able to keep five to six writers with full magazines for the MCX and P320. After…
The top BCG is a full auto as compared to the “neutered” BCG at the bottom. Notice the difference in the rear. The weight of a Bolt Carrier Group, or BCG, in an AR15 platform has been modified from the original weight of a full-auto BCG in an attempt to prohibit full-auto conversion of otherwise…
It was a few months ago I got a test rifle from Stag Arms to wring out. Though I was somewhat familiar with the company I had little experience with their rifles, so I went into this with an open mind. The test sample rifle was outfitted with Magpul furniture complete with flip up sights….
I received an Elftmann Tactical drop in 3 Gun trigger for an AR-15 to review and swapped it in my Barnes Precision Machine SBR AR-15, reviewed here. Though there was nothing wrong with the trigger in the SBR, the Elftmann trigger appeared to be very high quality and as a shooter I need all the…
SB Tactical has released a statement in it’s blog, that can be found by following this link, announcing The Bureau of Alcohol, Tobacco, Firearms, and Explosives issued a reversal letter containing clarification of the BATF’s opinion on the use of AR pistol braces. The letter contains, as copied from SB Tactical’s site ““an NFA firearm has…
Advantages and benefits of Ni B, nickel boron, and nitro met, salt bath nitride on AR bolt carrier group, barrel, and gas tube assemblies. This is an inexpensive modern technology process to protect the surface of alloy steel against wear as well as corrosion. The traditional manganese phosphate process on mil spec bolt carrier groups…
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