Zak has written a very interesting article on “Fighting Optics for the AR-15″. He focuses on M4 type rifles and SBRs (Short barreled rifles).
Now that optics have come of age on fighting rifles, one of the most compelling reasons to have a longer barrel has been removed. With iron sights such as those on the M16A2, practical accuracy depends on sight radius; it is easier to shoot accurately with more distance between the front and rear sight. Optical sights have no sight radius; barrel or weapon length is now separated from the ability to obtain a precise sight picture. This change allows a 14.5-inch M4 to have the same sighting precision as a 20-inch M16A2 or even sniper rifle.

M4 with Trijicon ACOG 4x
Read it here.
Check out this auction. It has thousands of beautiful photos. I think all, or nearly all, come from one collection.

Daniel Fraser Miniature Double Rifle .22 Hornet

Franchi Model 1962 Semi-Auto Carbine 9mm

Smith & Wesson Mark I Light Rifle 9mm

Custom Martz Luger Carbine

Colt Model 1900 .38 ACP
Auto-Ordnance has a new “Tactical Folding Stock Model” M1 Carbine out later this year.

Black polymer folding stock, metal handguard
The Auto-Ordnance M1 .30 Caliber carbine is produced in Kahr’s state-of-the-art manufacturing plant in Worcester, MA. The Auto-Ordnance carbines are produced using newly manufactured parts on high precision computerized machinery.
Markings include the following: Auto-Ordnance, Worcester, MA behind the rear sight; U.S. Carbine, Cal. 30 ML on the receiver in front of the bolt and the serial number is engraved on the left side of the receiver.
Specs:
Barrel 18″
Length 36 1/2″ overall, 27 1/2″ (Folded)
Weight 5 lbs 13 ounces
Finish Parkerized
Sight Post front sight, flip style rear sight
Stock Polymer
Magazine One 15 Shot stick
Price $792.00
Hat Tip: Cryptic Subterranean
Atlantic firearms are getting in some semi automatic Thompsons.
Details are sparse. There are two models, one with a push button detachable stock, one with a normal stock.
All the classic details of the time honored original are reproduced in today’s semi-auto Thompson. The frame and receiver are machined from solid steel. The wood is genuine American walnut. This .45 caliber carbine features a 16 1/2″ finned barrel, compensator and is available with a blued steel receiver. This configuration is our most popular.

They are apparently “coming soon” and no price is listed.
Defense Review have written an article about the new SIG 556 SWAT Rifle/Carbine/Subcarbine

SIG 556 rifles/carbines at SHOT Show 2006 (photos accompanying this article), and found them interesting. We’ve always been fans of the SIG 550-series weapons, particularly after we test-fired a Gemtech-supressed (sound-suppressed) SIG 552 SBR/Subcarbine at SWAT Round-Up 2002. The SIG 550-series assault rifles / tactical rifles utilize an AKM / Kalashnikov-type gas-piston/op-rod system for operation, and you can’t really go wrong with that with regard to weapon reliability.
While the SIG 556 series weapons are currently only availale in 5.56mm NATO, 6.8×43mm SPC (a.k.a. 6.8mm SPC a.k.a. 6.8 SPC), 7.62×39mm, and possibly even 7.62×39mm NATO (7.62mm NATO)/.308 Win. (unconfirmed/unverified) versions are on the way. DefenseReview doesn’t know at present whether the select-fire variant of the SIG 556 SWAT is available in true semi-auto/full-auto configuration, or only in semi-auto/three-round burst config, or semi-auto/3-round burst/full-auto config. Unfortunately, Mr. Poole’s article does not make that clear. Defense Review prefers a straight semi-auto/full-auto selector switch. We like our trigger finger to determine how many rounds we put down range on full-auto, not an artificial limiter. In any case, the SIG 556’s trigger action in the 3-round-burst-capable variant appears from what Mr. Poole wrote to be superior to the Colt M4 Carbine trigger with regard to smoothness and consistency.
I like their caliber offering. It looks like they will be competing with the Magpul Masada.
More here.

The Army dust test results are out. As you can see above the M4 has fared very badly.
Weapons officials at the Army Test and Evaluation Command at Aberdeen Proving Ground, Md., exposed Colt Defense LLC’s M4, along with the Heckler & Koch XM8, FNH USA’s Special Operations Forces Combat Assault Rifle and the H&K 416 to sandstorm conditions from late September to late November, firing 6,000 rounds through each test weapon.
When the test was completed, ATEC officials found that the M4 performed “significantly worse†than the other three weapons, sources told Army Times.
Officials tested 10 each of the four carbine models, firing a total of 60,000 rounds per model. Here’s how they ranked, according to the total number of times each model stopped firing:
* XM8: 127 stoppages.
* MK16 SCAR Light: 226 stoppages.
* 416: 233 stoppages.
* M4: 882 stoppages.
The results of the test were “a wake-up call,†but Army officials continue to stand by the current carbine, said Brig. Gen. Mark Brown, commander of Program Executive Office Soldier, the command that is responsible for equipping soldiers.
You can bet H&K, FN and Magpul are happy about these results!
Hat Tip: Murdoc Online
Apparently the Israeli ‘Civil Guard’ and licensed tour guide operators on tour still use the M1 Carbine!


I came across a company call Stellar Rigs who claim to be selling some pretty cool carbine conversion kits for 1911 and Glock pistol made by “Mec-Tec”
The website is out of date and I do not know if the kits are still sold. I do know that in most Western countries converting a pistol into a rifle is not allowed. UPDATE: I was wrong. See comments below.



UPDATE:
Some more photos from gunbroker

