小批量试生产（英语：Low rate initial production），简称试生产（LRIP），是用于评估军用武器项目的常用术语，用来描述新武器初期的低速制造阶段。在这一阶段中，武器的购买方及用户（如一国的国防当局和相关武装部队）将对武器系统进行长时间彻底测试，以在签订量产合同前确认武器性能满足其要求。同时，制造商可以利用这一阶段测试量产生产线。因此，小批量试生产一般是从生产高度定制、手工制造的原型，转换到最终批量生产的第一步。实际操作中，不论是生产能力还是武器系统自身都可能在试生产阶段有所欠缺，这也意味着由于不成熟的生产线、武器设计的改动等原因，在试生产阶段生产的产品在技术和造价上与量产阶段产品会有显着差别，并且需要大量的手工装配和通常在原型阶段进行的反复试验（trial-and-error）。此外，试生产的花费可能会比量产的高出许多，这是由于试生产的花费不止包括了产品的价格，还包括了科研花费，不过生产商的一大任务就是将这些花费分担在未来的量产中。

Low rate initial production (LRIP) is a term commonly used in military weapon projects/programs to designate the phase of initial, small-quantity production. The prospective first buyer and operator (i.e., a country's defense authorities and the relevant military units) gets to thoroughly test the weapons system over some protracted amount of time—in order to gain a reasonable degree of confidence as to whether the system actually performs to the agreed-upon requirements before contracts for mass production are signed. At the same time, manufacturers can use the LRIP as a production test-phase where they develop the assembly line models that would eventually be used in mass production. Therefore, the LRIP is commonly the first step in transitioning from highly customized, hand-built prototypes to the final mass-produced end product. In practice, either the production capability or the weapons system itself can be unready during the LRIP phase. This can mean that systems produced during LRIP are built significantly differently both in terms of technique and cost owing to the immaturity of the production line or changes in the weapons system's design, necessitating a large degree of hand-assembly and trial-and-error typically associated with the prototyping stage. Furthermore, the cost of each LRIP system can be much greater than the final mass production unit cost, since the LRIP cost can include both the R&D and setup cost for production, although the goal is that this additional cost is spread out over future production carried out by the assembly capacity developed during LRIP.