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The XM7, previously designated as the XM5, is the U.S. Army variant of the SIG MCX Spear, a 6.8×51mm (.277 in), gas-operated, magazine-fed assault rifle [1] designed by SIG Sauer for the Next Generation Squad Weapon program in 2022 to replace the M4 carbine.
The market pushed SIG to produce the rifle with the slimmer profile 551-type handguards and a hooded front sight; this version is marketed as the SIG 556 Classic. [16] Several folding stock models have been released as well as variants with railed forend combinations. Another variant is the SIG 556 DMR featuring a 18 in (457.2 mm) barrel. [17]
The .277 Fury or 6.8×51mm Common Cartridge [4] [5] (designated as the .277 SIG Fury by SAAMI) [1] is a centerfire rimless bottlenecked rifle cartridge announced by SIG Sauer in late 2019. [2] Its hybrid three-piece cartridge case has a steel case head and brass body connected by an aluminum locking washer to support the high chamber pressure ...
The first production rifles were delivered in 1989, and the rifle became approved for competitions in all three organizations starting 1 January 1990. Between 2005 and 2015, the DFS tested the Sauer 200 STR rifle in the 5.56×45mm NATO chambering, since this is the new service cartridge the Norwegian Army has adopted. [7]
India: Order placed for 72,400 units of SIG 716i model. In December 2019, the first lot of 10,000 rifles was delivered to the Indian Army’s Northern Command. [19] SIG Sauer also confirmed that delivery of the first order has already been completed. [20] Another batch of 70,000 rifles was cleared for order in December 2023.
SG 510-5: .30-06 Springfield (7.62×63mm) experimental rifle made for testing by the Mexican Government. SG 510-6: 7.5×55mm Swiss test batch of rifles based on the SG 510-4 in the Swiss military chambering intended to replace the heavier Stgw 57. The rifles were only built for testing and were no longer considered after 1980s trials.
The SIG MCX Raptor is a short-barreled rifle variant intended to serve as a carbine, featuring an 8-inch (200 mm) barrel and a Picatinny rail tail interface for attaching either a compact buttstock or a folding PCB (pistol contour brace). It is available in .277 SIG FURY, 6.5 Creedmoor and 7.62×51mm NATO. [12]
The XM250's design is an offshoot of the MG 338 which SIG was also developing for SOCOM. [7] The XM250 light machine gun and XM7 rifle were designed to fire the 6.8×51mm SIG Fury cartridge in response to concerns that improvements in body armor would diminish the effectiveness of common battlefield rounds such as the 5.56×45mm NATO (used in ...