▁a ▁ 3 D - print able ▁AR - 1 5 ▁lower ▁receiver ▁project ▁that ▁was ▁partially ▁inspired ▁by ▁the ▁P 9 0 . ▁It ▁began ▁as ▁a ▁design ▁exercise ▁by ▁a ▁DE FC AD ▁user ▁to ▁explore ▁F DM ▁add itive ▁manufact uring ▁technology ▁as ▁a ▁means ▁of ▁integr ating ▁the ▁P 9 0 ' s ▁erg onom ics ▁into ▁a ▁stock ▁for ▁the ▁AR - 1 5 , ▁resulting ▁in ▁the ▁War F air y ▁P - 1 5 ▁stock ▁set . ▁ ▁See ▁also ▁List ▁of ▁notable ▁ 3 D ▁printed ▁weapons ▁and ▁parts ▁ ▁References ▁ ▁Category : 3 D ▁printed ▁fire ar ms ▁Category : Fire arm ▁components ▁Category : F used ▁fil ament ▁fabric ation ▁ ▁External ▁links ▁AR - 1 5 _ W ar F air y _ P - 1 5 _ Sto ck _ v 2 . 0 - W ar F air y <0x0A> </s> ▁Three ▁athlet es ▁from ▁Den mark ▁competed ▁in ▁five ▁sports ▁at ▁the ▁ 1 8 9 6 ▁Summer ▁Olympics ▁in ▁Ath ens . ▁ ▁Two ▁of ▁the ▁three ▁combined ▁to ▁win ▁a ▁gold ▁medal , ▁two ▁sil vers , ▁and ▁three ▁bron zes , ▁while ▁Eugen ▁Schmidt ▁earned ▁no ▁med als . ▁ ▁V ig go ▁J ensen ▁contributed ▁one ▁of ▁each ▁color , ▁while ▁Hol ger ▁N iel sen ▁earned ▁the ▁second ▁silver ▁and ▁two ▁bron zes . ▁ ▁Sho oting ▁and ▁weight l ifting ▁were ▁Den mark ' s ▁most ▁successful ▁sports . ▁ ▁Den mark