Reliable feeding, comfortable to shoot, accurate, groups well even with surplus ammo. The action is as smooth as an oiled snake.
However, I noticed these marks behind the breech (2nd picture). I think it’s from the brass as it’s being extracted. What gives?
I’m not picky about my firearms being in mint condition, they’re tools after all, but this could present a rust problem later on if I’m not careful. That, and I just don’t think it should be happening… Any advice? @coffeeandspentbrass, @schweizerqualitaet, you’re some of the most knowledgeable people on guns I’ve come across on Tumblr. Help?
Left: 5.56, middle: 6.5 Grendel, right: .50 Beowulf. The bullet in the middle is my choice for the next round to replace the standard issue 5.56 round of the U.S military. 6.5 Grendel was developed by Bill Alexander and Janne Pohjoispää. It’s around the same size as 5.56, but has better range, stopping power, and accuracy. Often compared to 7.62 NATO, 6.5 Grendel has similar characteristics, without having the heavy bulk or recoil.
This familiar looking bullpup has an interesting history. The original design came Australia from a company called Armtech, which was hoping to win a contract to arm the Australian military. They didn’t win the contract, sold their design to a company called Edenpine who then contracted Bushmaster to produce them domestically. Edenpine eventually went bankrupt and sold the rights to Bushmaster, who produced the M17S for several more years before discontinuing the rifle. K&M Arms picked up the design and now produces a modern day, upgraded model available in 5.56x5mm, .300 Blackout, 6.5 Grendel and .308 Winchester. (GRH)
“The new RD 6.5 Grendel prototype built with the new @sharpsbros MB6.5G milled receiver. John and I built this this weekend it shooting dub MOA at 100yards and John Sharps we’ll be testing it out to 700 yards this week.”
An AR-15 chambered in 6.5 Grendel, a rather accurate and popular caliber among some target shooters. I’ve seen some 6.5 Grendel AR-15′s before with 22″, 24″ and even 26″ barrels, though most owners report 24″ as the best in terms of velocity. This one has a JP Enterprise Recoil Eliminator Muzzle Brake which is supposedly pretty effective at what it does. Generally you only see the JP brake on competition guns. (GRH)
A custom built AR-15 in a caliber that has slowly been gaining in popularity. 6.5 Grendel has even been adapted for use in some AK rifles. If I had one criticism of the rifle in the photos, it’s the “skull” finish on the upper and lower receivers. If it was a matte stainless finish like the barrel, then the two-tone appearance might sell it faster. As it stands, this ones been on an auction site for a while. (GRH)
5.56x45mm, 6.5 Grendel and 7.62x51mm. The focus on this post is more on the middle cartridge, the Grendel, which has garnered a bit of popularity on the AR platform; with even a few AK’s chambered in it. Although the Grendel is for the AR-15 family, it uses its own proprietary magazines, which is a bit of a downside since you essentially have to buy a set of new mags. You can also use 7.62x39 brass for 6.5 Grendel, just requires a minor bit of work and tools. (GRH)