The United States Navy Mk 12 MOD 0/1/H Special Purpose Rifle (SPR) is a designated marksman rifle that was in service with United States Special Operations Forces in the designated marksman role until 2017, also designed to be shorter than standard weapons.

SPR计划是为美国陆军和海军的特种部队（NAVSPECWAR）提供一种有效射程比M4式卡宾枪远、长度比标准的M16A2/A4短的轻型狙击步枪。 这种武器系统原本由马克·韦斯特罗（Mark Westrom）策划，当时他在岩岛兵工厂工作，现在则在阿玛莱特任董事长。 但目前SPR计划似乎已经与计划中的SOPMOD Block 4和海豹突击队“侦察步枪”一起取消了。 原因是特种部队对这种“轻型狙击步枪”似乎不太感冒。 在一个国外的枪械论坛上，曾有一名ID为 FROGMAN 的海豹队员 …

2021年4月27日 · The 5.56mm Mk12 Mod 0 SPR was designed to provide both precision and support fire for US Special Forces. It was successfully fielded in both Afghanistan and Iraq.

美国海军 的Mk.12 Mod 0/1特种用途 步枪 （Special Purpose Rifle，简称SPR）已经被美国陆军、海军和 海军陆战队 的 特种部队 在持久自由行动和伊拉克自由行动中使用过。SPR最初表示的意思是特种用途机匣（Special Purpose Receiver），这个可更换的上机匣组成是属于SOPMOD ...

2020年6月2日 · The United States Navy Mark 12 Mod 0/1 Special Purpose Rifle (SPR) is a rifle that has been in service with the United States special forces in Operation Enduring Freedom and Operation Iraqi Freedom.

2020年4月3日 · The SPR, especially the Mod 0, was loved by the operators from all branches of Special Operations, especially when it was compared with the M110SASS rifles. The SPR was reported to have been made to very high tolerances and was much more reliable than the more mass produced M110 rifles.

Mk 12 Mod 0／Mod 1特别用途步枪 ，简称：Mk 12 SPR，是一种被美国特种作战司令部旗下的特种部队于持久自由行动和伊拉克自由行动期间使用的武器。该枪原先是被称为“特别用途机匣”（Special Purpose Receiver），但现在它已成为一种独立的武器系统，而不再只是更换 ...

The major difference in the Mod 0 and Mod 1 is the handguard assembly and the back-up sights. The Mod 0 uses the A.R.M.S., Inc. #38 SPR Mod. Swan Sleeve with the PRI (Precision Reflex Industries) Ged III Freefloat Forearm, which is made from aluminum and carbon fiber materials.

An Army Special Forces soldier takes aim with a MK12 Mod 0 fitted with a suppressor and a removable Harris swivel model bipod.