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The M&P15-22 was designed to be a less expensive alternative for training with an AR-15 style rifle, as the rifle itself is much less expensive than most AR-15s, and the .22 LR ammunition is often much less expensive than the .223 Remington/5.56×45mm NATO. The rifle features a safety and bolt lock that operate just like an AR-15's.
The rifle model is based on the Colt AR-15. Smith & Wesson offers the M&P15 semi-automatic rifles in different configurations, tailored to specific shooting applications and styles. The rifle has different models that come chambered in 5.56mm NATO/.223 Remington, .22 Long Rifle, and 5.45×39mm.
Attaching the barrel to the receiver using a barrel nut and a barrel with a shoulder is an alternative to action threads, which has been used in firearms such as the Sten gun and AR-15. Hand tools Quick barrel change systems is an increasingly popular alternative, as seen in for example SIG Sauer 200 STR, Roessler Titan or Blaser R8.
The 15-2 used a roll pin inserted into the frame as a centering dowel combined with a precisely drilled hole in each shroud assembly to facilitate proper shroud centering and alignment, thus eliminating the need for flanged barrel shrouds. The 15-2 introduced more barrel and shroud options, including barrel/shroud lengths of 2.5, 4, 6, 8, 10 ...
The steel barrel has an integrated Weaver style rail (similar to a Picatinny). This pistol is distinguished by two features: An integral rail along the top edge of the gun permits easy mounting of optical sights and other accessories. The gun's alloy frame and alloy-shrouded barrel help keep weight down for a full-sized pistol.
Firearms use triggers to initiate the firing of a cartridge seated within the gun barrel chamber.This is accomplished by actuating a striking device through a combination of mainspring (which stores elastic energy), a trap mechanism that can hold the spring under tension, an intermediate mechanism to transmit the kinetic energy from the spring releasing, and a firing pin to eventually strike ...
An evolution of the M&P Shield, the M&P Shield Plus, among other improvements, utilizes a double-stack magazine to increase capacity at the sacrifice of a slight increase in width. In November 2021, Smith & Wesson introduced the M&P M2.0 chambered in 10mm Auto to the M&P M2.0 family. Smith & Wesson offers a 4.0 in (101.6 mm) barrel compact ...
15–5, 1986 Introduction of 6” and 8-3/8” barrel; 15–6, 1988 New yoke retention system/ radius stud package/hammer nose bushing; 15–6, 1988 Discontinue 8-3/8” and 2” barrel; 15–6, 1992 Discontinue 6” barrel, blue finish only; 15–7, 1994 Synthetic grips introduced, drill and tap frame, change rear seat leaf, change extractor