Pistol, Compact, 9mm, M11
The 9mm M11 Compact Service Pistol is the military version of the SIG P228 pistol, itself a compact version of the well-regarded SIG P226. The M11 is primarily used by military law enforcement and security personnel, and has also been popular as a personal weapon for pilots and aircrews in all the services. The almost identical P228 has seen adoption in police and military organizations worldwide. The M11 (or P228 before standardization) has been procured by all branches of the U.S. military, first by the US Navy in 1989 and then by other services, including the Army, in the 1990s.
Aboard USS Ronald Reagan (CVN 76) Sailors train with the Pistol, Compact, 9mm, M11, underway in the Indian Ocean, 24 Aug 2008.
|Today in WW II: 25 Oct 1943 American and New Zealand troops land at Mono and Stirling, Treasury Islands, south of Bougainville [25-27 Oct]. More ↓
|25 Oct 1944 First operation by the Japanese Kamikaze Special Attack Force: 55 kamikazes strike 7 carriers and 40 other ships, sinking six, off Leyte, Philippines.
25 Oct 1944 Battle off Samar [Leyte]: US Admiral Sprague skillfully prevents a loss to the stronger Japanese force under Japanese Admiral Kurita.
25 Oct 1944 Battle off Cape Engaño (Leyte): lopsided naval battle resulting in the loss of most of Japanese Northern Force to US Admiral Halsey's carrier planes and battleships [25-26 Oct].
25 Oct 1944 Soviet Red Army enters Kirkenes, the first town in Norway to be liberated from the Germans.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.
Pistol, Compact, 9mm, M11
Pistol, Compact, 9mm, M11
The SIG (or SIG SAUER, used interchangeably) P228, adopted by the U.S. military as the Pistol, Compact, 9mm, M11, is manufactured in the United States by SIG SAUER. Located in Exeter, NH, they are a 300 employee unit of a worldwide business group of firearms manufacturers that includes J.P. Sauer & Sohn and Blaser, Gmbh, in Germany and Swiss Arms AG in Switzerland.
The M11 pistol is produced only for 9mm Luger Parabellum ammunition and cannot be converted to other loads due to its stamped steel slide which is only strong enough for 9mm ammo. The nearly identical P229 has a stronger slide and therefore is offered in other calibers than 9mm.
For most adopters, the M11 is preferred over the Beretta M9 9mm Service Pistol due to its shorter, smaller size that is more easily carried concealed or as a backup weapon.
As of a report issued in March 2003 by the DoD IG, this was the inventory of P228/M11 pistols in the investigative agencies of the U.S. Department of Defense:
|Air Force Office of Special Investigations (AFOSI)||2,062 mostly M11|
|Defense Logistics Agency Criminal Investigations Activity (DCIA)||30 M11|
|Naval Criminal Investigative Service (NCIS)||1,874 mostly M11|
|Pentagon Force Protection Agency Criminal Investigations/Internal Affairs Directorate (PFPACI/IAD)||6 P228|
|U.S. Army Criminal Investigation Command (USACIDC)||1,345 mostly M11|
Procurement of the P228 was superseded by the standardized M11 based with a warranty commencement date of 20 Jan 93. By the late 2000s, the P228 was being relaced by newer weapons such as the SIG SAUER P229 and P239 pistols, often in .40 cal.
Equipment Description for the M11 9mm Pistol
The M11 compact pistol is a mechanically locked, short-recoil operated weapon featuring an automatic firing pin safety
lock, double-action trigger, decocking lever, and external slide stop. Loading is automatic with each shot fired, until the magazine is empty. The slide is held open after the last shot has been fired.
The M11 pistol incorporates single and double action modes of fire. Any time the trigger is pulled with a round in the chamber, the pistol will fire from either the hammer-down or cocked position. Safety features ensure that the weapon can be fired only by pulling the trigger. Other features of the M11 9mm Pistol:
- Automatic firing pin lock provides optimal safety with the hammer in either the cocked or decocked position.
- Double-action trigger and the absence of manual safeties provide immediate first-shot potential.
- Decocking lever allows the cocked hammer to be lowered into the safety intercept notch without touching the trigger. During this procedure, the firing pin remains automatically locked.
- External slide stop located on the left side of the weapon.
- High-contrast sights allow rapid target acquisition, even under poor light conditions.
- Closed design limits dirt and sand infiltration.
- Magazine catch is ambidextrous and can be installed for either left-hand or right-hand users.
Charactaristics of the M11 9mm Compact Pistol
|Caliber||9mm NATO (9x19mm)|
|System of Operation||Short recoil, semiautomatic|
|Locking System||Oscillating block|
|Length||180 mm (7.08 inches)|
|Width||37 mm (1.46 inches)|
|Height||136 mm (5.35 inches)|
|Magazine Capacity||13 rounds (plus one in chamber)|
|Basic Load, Three Magazines||39 rounds|
|Weight with Empty Magazine||745 g (1.6 lb)|
|Weight with 13-Round Magazine||830 g (1.8 lb)|
|Barrel Length||98 mm (3.86 in)|
|Rifling||Right-hand, six-groove (pitch 250 mm [9.84 in])|
|Muzzle Velocity||375 meters/second (1,230.3 feet/second)|
|Muzzle Energy||569.5 Newton meters (420 foot pounds)|
|Maximum Range||1,800 meters (1,962.2 yards)|
|Maximum Effective Range||50 meters (54.7 yards)|
|Front Sight||Blade, dovetailed to slide|
|Rear Sight||Notched bar, dovetailed to slide|
|Sighting Radius||145 mm (5.8 inches)|
|Safety Features||Decocking lever, automatic firing pin lock.|
|Hammer (cocked or decocked)||Prevents accidental discharge. Stops the hammer from accidentally falling fully forward if the full-cock notch is stripped. Also, catches the hammer if the cocking cycle is interrupted in the double-action fire mode.|
|Trigger Pull||Single-Action: 4.40 pounds, Double-Action: 12.12 pounds|
The Pistol, Compact, 9mm, M11 differs from the SIG P228 in that there are military unique markings and Tritium sights. Two NSNs have been assigned:
- Pistol, Compact, 9mm, M11 (NSN 1005-01-336-8265)
- Pistol, Compact, 9mm, M11 with Tritium Sights (NSN 1005-01-340-0096)
Manuals for the Pistol, Compact, 9mm, M11 include:
- TM 9-1005-325-10 Operator’s Manual
- TM-9-1005-325-23&P Unit and Intermediate Direct Support Maintenance Manual
- FM 3-23.35 Combat Training with Pistols, M9 and M11 (incl C-1 thru C-4)
Recommended Book about 9mm Pistols
Find More Information on the Internet
There are many fine websites that have additional information on this
topic, too many to list here and too many to keep up with as they come and go.
Use this Google web search form to get an up to date report of what's out there.
For good results, try entering this: pistol m11 or p228. Then click the Search button.