Relevance. 4 4. Sigh. Must hit the target. But end of the day is the human that deploy it and use it that count. Sighting is through a standard-issue 1.5x optics installation while adjustable iron back up sights are retained. When I got the opportunity to fire the weapon during the Army Open House, it certainly scored high for me as compared to the M16 we've been handling in NS. 4DAHUNT. The SAR 21 MMS in real life with an attached holographic sight and foregrip. 1 decade ago. MSRP starts at $1,999.00. Both m16 n SAR 21 have it's pro and con . The SAR needs to be mounted tightly into the shoulder, more tightly than the M4 before firing. ArmyStudyGuide.com provide extensive information about Correct Malfunctions of an M16A2 Rifle (ArmyStudyGuide.com) A single point sling, which I didnât mount, would be helpful for keeping the SAR in a good position for mounting. Those chiong mountain and lurp one probably like m16 better. M4; M16; AR-15; SAR 21; Sig Sauer â 551, 5552, 553; Steyr AUG; Sub-Machine Gun Conversions. The major debate seems to be weight. The SAR-21 fires the 5.56x45mm NATO cartridge from a 30-round curved detachable box magazine and also supports the M16 STANAG type. The TAVOR® SAR uses standard AR-15/M16 magazines and can be easily field-stripped into sub-assemblies for routine maintenance. 16 Answers. Soldiers can carry more 5.56 than they can 7.62. The base SAR-21 is the standard infantry assault rifle system. The standard caliber is 5.56 NATO (.223REM), with conversion kits available in 9mm Luger Parabellum and 5.45X39mm. This is an issue that can be overcome by spending time with the SAR, and understanding the handling difference involved. That has been a topic in the military community since the conception of the 5.56. Sometimes, in very bright conditions and against a â¦ There is a few more problem that has not been listed: the reticle on the SAR-21 1.5X scope is not always clear. I have shot the Tavor SAR and it performed well. Colt â SMG; FN â F2000, FN P90; H&K â MP5, MP5K, UMP 5.56x45mm/ .223= m16, steyr aug, sar 21, tar 21 ex. At the present time the SAR-21 is adopted by the Singapore Armed Forces as the standard assault rifle, and gradually replaces the ageing M16S1 (Singapore-made M16A1 rifle), and CIS previous SAR-80 and SR-88 rifles. Lv 5. It is also offered for export military and law enforcement sales. The ST Kinetics SAR 21 (Singapore Assault Rifle - 21st Century) is a Singaporean bullpup Assault Rifle developed in the early 90s and later adopted by the Singapore Armed Forces in 1999. Maybe those doing defend will like SAR 21 becos shooting is accurate and easy. Favorite Answer. by David Crane [email protected] March 16, 2004 The SAR-21, manufactured by ST Kinetics Land Systems (out of Singapore) and marketed by VT Kinetics in the U.S., is a roughly 2 1/2 year old, "state-of-the-art" bullpup 5.56mm assault rifle that is currently going head to head with the Israeli TAR-21(Tavor) bullpup rifle, and all other modern 5.56 assault rifles on the â¦ Answer Save. For those still using a sub-machine gun style platform, UTM has the most popular SMGâs covered as well. For those older reservists that had used both the SAR-21 and the M16, the former compares unfavourably with the latter. However, when the SAR-21 assault rifle was first demonstrated publicly in 1999, it got people's attention (at least mine). Not to be confused with the MTAR-21. 1 decade ago. Hack Benjamin.