5.56 cal. 8.46", which provides approx. 1 1/2" of attachable rail beyond the receiver, and has the #40LT rear flip up sight built in. 100% MADE IN THE USA.
The Swan® Sleeve provides a platform that is semi-permanent to the 5.56 cal M16 type weapons equipped with a flat top receiver. It raises the rail by 1/2" while protecting the rifle dovetail rail.
- U.S. Patent No. 5,142,806 & 5,533,292
- 5.56 cal.
- 8.46" long