American Rifleman - August 2017 - 38
REPORTS | PRODUCTS & PROJECTS
American Defense Mfg. SM-02
quick-detach magnifier mount designed to provide absolute co-witness with mil-spec AR-15 iron
sights and red-dot optics of similar height, the American Defense Mfg. SM-02 is compatible with all
30 mm red-dot magnifiers. Machined from hard-coat anodized 6061 T6 aluminum, the SM-02 features a tensionadjustable swing arm that allows the shooter to flip the magnifier out of the way for an unmagnified sight picture.
Price: $135. Contact: American Defense Mfg. LLC; (262) 780-9831; americandefensemanufacturing.com.
DoubleStar Oops! Replacement Kit
nyone who has built, modified or maintained an AR-15-style rifle is familiar with the firearm's family
of small springs and detents. In an assembled firearm, many of the springs are under constant tension, and are therefore easily lost should they take flight during maintenance or disassembly. The
Oops! Replacement Kit from DoubleStar is a good insurance policy against such frustrating, and inevitable,
occurrences. The kit includes two each of the following: buffer detent spring, buffer detent, selector spring,
selector detent, extractor spring with bumper pad, firing pin retaining pin; and four-each of: takedown
detent spring, takedown detent. Price: $16. Contact: DoubleStar, Inc.; star15.com.
FailZero Elite Kit
airing the company's M16 BCG (bolt carrier group) with its EXO Coated Trigger
Group, the FailZero Elite Kit delivers both enhanced performance and great value
for the cost-conscious AR-15 builder. Fully assembled and ready for drop-in installation, all critical parts on the BCG have been nickel-boron coated, as have the single-stage
trigger's components. This treatment increases resistance to wear and corrosion, reduces friction, limits the build up of carbon fouling, and provides dry lubricity. Black- and matte-finished
BCGs are available for $10 more. Price: $200. Contact: FailZero; (866) 214-6926; failzero.com.