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Tip of the day: Don’t fire a waterlogged AR-15!

This video clip is from a marketing video made by H&K comparing the 10″ barreled HK 416 with the M4 when fired full of water, immediately after being submerged.

It is a pointless comparison. Obviously Stoner did not design the AR-15 platform to be fired waterlogged. If he had it would be piston driven. Still, it is interesting to see what happens.

H/T: MP.net

Posted by Steve on Nov 18th 2008 | Filed in rifles | Comments (7)

Colt’s new AR-15 firearms

Over the past few months Colt has been unveiling a variety of new AR-15 firearms. If a replacement for the M16 or M4 is chosen they want it to be a Colt. To ensure this designed a range of weapons that should cover all bases. David @ Defense Review has been relentlessly covering the new firearms.

Many of the improvements Colt have developed have been applied to all these guns, I won’t list them all, click the links to read the full details.

Colt Sub-Compact Weapon (SCW)

A 5.56mm 10.3″ barreled sub-carbine/PDW featuring the new Colt side-folding stock. It is able to use an upgraded gas impingement system or the Colt Piston System (CPS)

Ausa Colt Defense Scw 5 Large
Side Folding Stock. Photo by SMGLee.

Colt ACC-M (Advanced Colt Carbine-Monolithic)

This is basically an upgraded M4. It features many small improvements over the M4A1 and Colt’s new monolithic rail system. If it was adopted it I think it would probably be named the M4A2.

Colt Advanced Piston Carbine (APC)

David calls this the HK416 killer. It utilizes the Colt Articulating-Link Piston (ALP) system.

Colt Advanced Hybrid Carbine (AHC)

This carbine features a hybrid gas impingement and gas piston system. I am very interested to see how that works.

Colt Infantry Automatic Rifle (IAR)

I covered this a few weeks ago on the blog. It is a light machine gun and Colt’s entry into the Marine Infantry Automatic Rifle competition.

 Blog Wp-Content Uploads 2008 10 Smglee-Ausa-Huge-Dscn0965
Colt IAR. Photo by SMGLee

Posted by Steve on Nov 12th 2008 | Filed in machine guns, military, rifles | Comments (6)

Bushmaster A3M4 Gas Piston photos

Jennersen was kind enough to photograph his Bushmaster A3M4 Gas Piston system for me. He took some really good shots.

Dsc00963-1

Thanks Jennersen!

The rest of them are here.

Posted by Steve on Jun 12th 2008 | Filed in photos, rifles | Comments (0)

POF-USA P-308

The POF-USA P-308 is a interesting rifle. It is a gas piston operated rifle, based on the AR-10/AR-15 design and requires no lubrication.

2007-08-26 Fd2
14.5″ version

They achieve this by plating the upper receiver with silicon nickel and chroming and heat treating the bolt and carrier.

M.R.R. Full Lenght(C)
Upper receiver

Here is a video of it in action

In spite of its name, it is chambered in 7.62X51mm, not .308 (yes, there is a difference).

More info at POF-USA and Defense Review.

Posted by Steve on Feb 21st 2008 | Filed in rifles, video | Comments (2)