Cart “.308 Extension Tube” has been added to your cart. Continue shopping “5.56 Lower Parts Kit Light” has been added to your cart. Continue shopping Remove item Product Price Quantity Subtotal Remove MARS RIGHT SIDE BOLT CATCH $67.40 Increase quantity MARS RIGHT SIDE BOLT CATCH quantity Decrease quantity $67.40 Remove MARS-L LEFT SIDE BOLT CATCH $39.40 Increase quantity MARS-L LEFT SIDE BOLT CATCH quantity Decrease quantity $39.40 Remove MARS RIGHT SIDE BOLT CATCH COVER $3.50 Increase quantity MARS RIGHT SIDE BOLT CATCH COVER quantity Decrease quantity $3.50 Remove M4 GEN II Buttstock $88.70 Increase quantity M4 GEN II Buttstock quantity Decrease quantity $88.70 Remove .308 Extension Tube $68.40 Increase quantity .308 Extension Tube quantity Decrease quantity $68.40 Remove 5.56 Lower Parts Kit Light $157.00 Increase quantity 5.56 Lower Parts Kit Light quantity Decrease quantity $157.00 Coupon: Apply Update cart Subtotal $424.40 Shipment Shipping costs are calculated during checkout. Total $424.40 Proceed to checkout