What new Grendel stuff will we see at SHOT?

[explorecaves]

Not grendel, but the Boberg Arms XR45 is getting close to a debut.

[tx4guns]

WANT!

http://tacfirecon.com/

[jurassic]

Way cool!

WANT!

http://tacfirecon.com/

[cory]

WANT!

http://tacfirecon.com/

That is kinda cool.

[XcountryRider]

It could get pretty pricey with the Grendel but Fun!!

[tx4guns]

The Barnes TAC-X bullets for the Grendel interest me. Love them in my 300blk.

[explorecaves]

SNEAK PEEK!! SLR Rifleworks Latchless Ambi Charging Handle

A standard charging handle features a latch that catches a slot on the left side of the upper. To release it and charge the rifle you pull back on the latch which pivots on a roll pin (the weakest part of the charging handle). This new design utilizes a captured ball bearing and spring that now acts as the latch. The spring forces the ball bearing into the slot on the side of the upper receiver which holds it in place. Simply pull back on the extended latch on either side of the new Charging Handle with a little force and the ball bearing will be compressed into the spring and release from the upper.

[LRRPF52]

That's pretty cool actually. The AR15 charge handle latch and interface with the aluminum upper has always been a weak link in the system. Type III anodizing helps beat the steel vs. aluminum, but getting used to the AR15 charge handle is a bit different than any other assault rifle.



It was originally designed with the same charge handle as the Armalite AR10 and Dutch Armalite rifles, with an inverted trigger-looking charge handle, which was totally ambidextrous, but the Dutch actually did the work to move the charge handle to the rear of the shaft, rather than the top front. They had a paratrooper's folding model with one handle on the right, rear of the current location.

A lot of progress has been made with charge handles since the introduction of the PRI Gas Buster, then the BCM Gunfighter series, then the Raptor, and other designs that make charging the weapon more user-friendly, with more robust & substantial construction and design points.

[explorecaves]

Some additional info on the Boberg XR45:

The Boberg XR45 appears to have a progressive twist barrel. Arne Boberg is also designing the XR45 to be compatible with a drop in barrel for .460 Rowland and is toying with potential chambering for .50 GI.

Post from Arne Boberg himself on velocity testing of the XR45 barrel blanks he is working with:

Some velocity tests from today (two-shot average):
…………………………………………...Sig Mauser M2, 3.66" barrel…………...XR45, 4.38" bbl……………….XR45-S, 3.75" bbl
American Eagle 230 FMJ.…...769 ft/sec, 302 FPE………………………...829 ft/sec, 351 FPE………...817 ft/sec, 341 FPE
Rem. Gold. Saber 185 JHP….863 ft/sec, 306 FPE………………………...980 ft/sec, 394 FPE………...939 ft/sec, 362 FPE
Note that for the XR45 to be the same length as the Sig Mauser M2 (7.01" overall), it would have a 5.07" long barrel. The 4.38" barrel is from a blank I just happened to have on hand. And yes, the rumor is true - Boberg Arms is using progressive twist rifling in the XR45. I did it mostly for recoil abatement, but the velocity is looking good, too.