Modern Firearms


 Shotguns - Introduction
Belgium
 Browning Auto-5
PR China
 Hawk pump
 Hawk semiauto
Germany
 HK CAWS
Italy
 Benelli M1
 Benelli M2
 Benelli M3
 Benelli M4 / M1014
 Benelli Nova tactical
 Beretta 1201FP
 Fabarm SDASS Tactical
 Fabarm SAT-8
 Franchi SPAS-12
 Franchi SPAS 15
 Valtro PM-5
Russia
 Bekas M
 Bekas Auto
 MP-133
 MP-153
 Saiga 12
 Saiga 20
 Saiga .410
 RMB-93
 TOZ-194
 KS-23
 Vepr 12
South Africa
 MAG-7
 Neostead
 Striker / Protecta
South Korea
 USAS-12
Turkey
Akdal MKA 1919 new
Hatsan AimGuard
 Safir T-14
 Stoeger 2000
 Stoeger SP 312
 Stoeger P 350
Ukraine
 Fort-500
USA
 High Standard 10A 10B
 Ithaca 37
 Jackhammer
 Mossberg 500
 Mossberg 590
 Remington 11
 Remington 870
 Remington 1100
 Remington 11-87
 Winchester 1300
 XM-26 LSS
 Atchisson AA-12
 USAS-12

all texts and some pictures
copyright © 1999-2009
by Max R. Popenker
and can not be used without author permission

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Benelli M1 Super 90 shotguns (Italy )


M1 Super 90 "Tactical" model with "ghost ring" (diopter) rear sights


M1 Super 90 "Entry" model with rifle-type open sights, shorter barrel and alternative buttstock with pistol grip


Benelli patented recoil inertia operated bolt system. Very simple, very effective.

Type: Semi-automatic, recoil inertia bolt system
Gauge: 12
Chamber: 76mm (3")
Weight: 3.18-3.63 kg.
Overall length: varies with barrel length
Barrel length: 508 mm (20 in) Tactical model, 355 mm (14 in) Entry model; other lengths available in hunting and self-defense versions
Capacity: 3 to 7 rounds, depending on model

Buy Benelli shotguns at Impact Guns online store

The Benelli M1 semi-automatic shotgun based on the proprietary Benelli system, which utilizes the gun recoil and inertia of the moving parts to operate the action. This system was developed by Benelli by the mid-1980s, and is simple and reliable in operation. System utilizes the rotating bolt head with two locking lugs that lock into the barrel extension. The bolt is mounted inside the massive bolt body (bolt carrier), and fixed to it by the locking pin, which allows the bolt head to move slightly forward and back and rotate simultaneously within the bolt body. The massive inertia spring is interposed between the bold body and head, and separate recoil spring is located in the buttstock, pressing the bolt body forward via the link at its rear. When bolt is in the battery, the locking lugs of the bolt head are engaged with the barrel and locked it. Inertia spring, pressing on the both bolt body and head, holds the head in the forward position relative to the body. When gun is fired, it recoils and moves back slightly against shoulder of the shooter. Due to the inertia of the bolt body, it resists the initial recoil movement, so the bolt head, locked rigidly with the barrel and the rest of the gun, moves back relative to the bolt body, compressing the inertia spring and rotating itself to unlock due to the head locking pin being encaged in the cam slot in the bolt body. As soon as the rotation of the head is enough to unlock the bolt head from the barrel, the residual pressure of the barrel pushes the bolt head back, and this, in turn, pushes the bolt body against the recoil spring, overcoming the bolt body inertia and commencing the reloading cycle (ejection of the spent case and feeding and chambering of the fresh round). As soon as the bolt group returns into the battery, the pressure of the compressed inertia spring pushes the bolt body slightly back against the bolt head, causing the bolt head to rotate and lock into the barrel. Now, gun is ready for the next shot. This sounds quite complicated, but the whole system is mechanically very simple and has few moving parts, resulting in high reliability and easy production and maintenance.

The Benelli M1 shotgun is no more than the system described above, built inside the aluminum alloy receiver and  mated with conventional underbarrel tube magazine and polymer stock, which is available with semi-pistol or pistol grip. Sights options are traditional shotgun sights, rifle type open sights or ghost-ring (diopter) sights. Mounts for laser pointers, tactical flashlights and red dot scopes also available on the market. 

Overall, the Benelli M1 is a high-quality shotgun, available in numerous versions for both civilian, law enforcement and military use.

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