The B5 Systems SRK1656 Sierra K is a compact stock engineered for PDW and compact weapon systems. Measuring 5.63″ in length, 1.50″ in width, and 3.80″ in height, this stock weighs just 6.60 oz, delivering a lightweight option for those building streamlined platforms. Installation requires the Sierra K Compact Mil-Spec Receiver Extension Kit (sold separately) and the stock features a durable matte Flat Dark Earth finish.
This stock incorporates a reduced profile with slim cheek design, a snag-free adjustment lever, and limited rotation QD sling mounts alongside integral fixed sling attachment points. Internal tensioners and an anti-slip buttpad enhance stability, while the slim, low-profile latch enables straightforward length of pull adjustments without compromising aesthetics. Ambidextrous QD sling mounts—both fixed and limited rotation—provide flexible carrying solutions. The Sierra K exemplifies B5 Systems’ commitment to innovation in tactical and precision shooting applications.
